Henry Hugglemonster

The Hugglemonster family

• Henry Hugglemonster (voiced by Lara Jill Miller in the US and voiced by Teresa Gallagher in the UK) is a 5-year-old in Astrobix^[12][13] yellow monster whose horns resemble those of a jester's cap. He never backs down from a problem, because he believes he and his family, and his friends can "always find a way." His favorite sport is huggleball, a game similar to soccer except that it is legal to carry the ball into the goal and the ball sticks to the monsters' skin. He is energetic, and is able to do a one-hand hang with his left for at least 40 seconds.^[14] He often says "Roarsome!" and his family motto "Hugglemonsters always find a way!". His middle name claimed to be "Alfonzo".
• Summer Hugglemonster (voiced by Hynden Walch) is the sister of Henry who is over 7 years old.^[15] She has pink skin and she wears red shoes,^[16] or occasionally blue ones.^[17] Her hobbies are putting on plays, singing, dancing, writing and composing music and songs and cheerleading.^[18] She is flexible enough to do a left^[19] front split. She is also called Summerling^[20] but it is unclear if this is her full forename or a nickname. In the book, her name was Lola Hugglewug. Her friends include Izzy^[21] and Meg.^[21]
• Cobby Hugglemonster (voiced by Chiara Zanni in the US and voiced by Ben Whitehead in the UK) is the older brother of Henry (thus Ivor and Summer), who has cyan blue skin.^[22] Henry also nicknames him Cobster.^[23] At at least 8 years old^[24] this makes him the eldest sibling of the family.^[15] He is an inventor and his inventions sometimes come in handy in solving problems. Some of his inventions include making monster bots, and making his own Astrobix spaceship model, whom his friend Oscar likes to do as well. He is also the tallest sibling of the family.
• Ivor Hugglemonster (voiced by Kari Wahlgren) is the youngest of the family, who is now one year old, but still cannot talk yet, nor fly.
• Daddo Hugglemonster (voiced by Tom Kenny in the US and voiced by Lewis MacLeod in the UK) is a green monster mailman who can be a bit forgetful at times. His talent is a form of juggling called huggle-juggling, which he often does when making the family's famous dinner. He is the son of Nan-Oh and Grando, the husband of Momma^[25] and the father of Cobby, Summer, Henry and Ivor. He is also a scoutmaster assisted by Eduardo Enormonster.
• Grando Hugglemonster (voiced by Tom Kenny in the US and voiced by Ben Whitehead in the UK) is the husband of Nan-Oh,^[26] father of Daddo,^[27] and paternal grandfather of Cobby, Summer, Henry and Ivor.
• Swifty Hugglemonster is the grandfather of Grando, the great-grandfather of Daddo, the great-great-grandfather of Cobby, Summer, Henry, and Ivor, and former mayor of Roarsville, depicted on an old coin.^[28]
• Momma Hugglemonster (voiced by Lori Alan in the US and voiced by Morwenna Banks in the UK) is a pink monsterette and a talented musician who plays multiple instruments. She teaches monster kids piano lessons.^[29] She is the wife of Daddo^[25] and the mother of Cobby, Summer, Henry and Ivor.
• Nan-Oh Hugglemonster (voiced by Grey DeLisle in the US and voiced by Jen Pringle in the UK) is the wife of Grando,^[26] mother of Daddo^[30] and paternal grandmother of Cobby, Summer, Henry, and Ivor.
• Beckett Hugglemonster^[31](voiced by Grey Delise ) is the Hugglemonster family's pet monster dog, who is orange and a boy.^[32]
• Harry Hugglemonster (voiced by Jessica DiCicco) is Henry's cousin who is four armed and has red skin. He once visited the Hugglemonsters in Thanksgiving, and started to cause some trouble. It is not clear which of his parents is a sibling of one of Henry's.
• Dexter Hugglemonster (voiced by Tom Kenny) is Henry's uncle and Harry's dad.
• Dee Hugglemonster (voiced by Jessica DiCicco) is Henry's aunt and Harry's mom.

The Dugglemonster family

• Denzel Dugglemonster (voiced by Cree Summer) is Henry's best friend^[33] (and Henry is his best friend as well^[34]). He has a passion for digging underground tunnels. He is white skinned, and has a brown circle around his right eye. His catchphrase is "Grr-ocious!". He appears reluctant at times, even being scared of his own nightmare during his sleep. In this process, he would hide himself somewhere safe so he wouldn't have to be involved in something he doesn't like. It is possible that he might have a case of post-traumatic stress (or post-roarmatic stress^[35]). He was the lead singer and a member of The Roarsome Foursome, formed by Henry and Summer.^[36]
• Herold Dugglemonster (voiced by Rob Paulsen) is the father of Denzel who works as a baker. He has the same skin colors as Denzel.
• Maude Dugglemonster (voiced by Cree Summer) is the mother of Denzel and the wife of Herold. She has the same skin colors as Herold and Denzel.
• Grammo Dugglemonster (voiced by Cree Summer) is the grandmonster of Denzel, who was one of the rapping grandmas in "Knit-O-Bot". It is still unknown if she has mothered Maude or Herold.
• Gurgler^[37] Dugglemonster is the Dugglemonster's blue pet monster dog.
• Denzel 3000 (voiced by Cree Summer) was a duplicate of Denzel Dugglemonster, in which Cobby had created/invented as a request from Henry after he and Denzel had a heated argument, which made them split up.^[38]

The Growlerstein family

• Gertie Growlerstein (voiced by Grey Griffin) is Henry's intelligent monsterette friend with orange skin and yellow little swirls around her body. She wears a watch on her left wrist and claims to never make mistakes.^[39] She is able to do a one-armed straddle planche on her right hand^[40] Henry refers to her as his pal.^[41]
• Milo Growlerstein (voiced by Hynden Walch) is the brother of Gertie, who is younger than her. He is Henry's friend, and also loves to play with his toys. He has the same skin color as Gertie, but has two light blue horns, blue polka dots and bigger eyes.
• Gregor^[42] Growlerstein (voiced by Tom Kenny) is the father of Gertie and Milo that had a few jobs that he worked in, including a comic book vendor.^[43]
• Joyce Growlerstein (voiced by Hynden Walch) is the mother of Gertie and Milo.^[44]
• Sneezo Growlerstein is the Growlerstein's female pet monster bird. She is allergic to monsterflowers.^[45]

The Enormomonster family

collectively referred to in the show as "the Enormos".

• Estelle Enormomonster (voiced by Grey Griffin and voiced by Chaniya Mahon in the UK) is a gentle giant who has purple skin, she's Henry's large, energetic and optimistic friend. She appears much taller than Henry, in spite of being younger than him, not turning 5 years old until the second season.^[46] She also knows how to play the harp.^[47]
• Eduardo Enormomonster (voiced by Brian Blessed) is Estelle and Hugo's dad. He serves as assistant scoutmaster to Daddo, and he also has an older brother even bigger than he is.^[48]
• Ernestine^[49] Enormomonster (aka Mrs. Enormomonster) (voiced by Brenda Blethyn) is Estelle and Hugo's mother and the wife of Eduardo.^[50]
• Hugo Enormonster (Voiced by Cree Summer) is Estelle's baby brother. He has navy blue skin and reassembles his dad's head when he was a baby.^[51]
• Josh Enormomonster is Estelle and Hugo's uncle and the father of Eduardo. He has red skin with yellow and green stripes in his belly and yellow horns with green polka dots on his head.
• Flopster Enormomonster^[52] is Estelle's purple monster dog, who is larger than her monster dogs friends.

The Snifflemonster family

• Izzy Snifflemonster (Voiced By Kari Wahlgren) is a yellow-purple monsterette that wears a shade blue pearl necklace around her beck, and is one of Summer's friends. She also likes Henry as well. It appears that she often has the sniffles (hence the name Snifflemonster). She has six purple horns, and once has slept over at her place with Meg.^[21] She also has competed with Summer in music.^[53] She is the only monsterette sibling in the family.
• Roberto Snifflemonster (voiced by Grey Griffin) is a teal-skinned monster, that has four horns (two horns on each side) and a dark blue stripe in his belly, who is one of Henry's friends, and appeared to be slightly shorter than him. He has a twin brother, named Hunter, who is also his friend.^[54] He also has a grandmonster,^[55] but may not be clear if she is also the grandmonster for the other Snifflemonster siblings. He and Hunter also appear to have short fangs, while the others have larger fangs.
• Hunter Snifflemonster (voiced by Cree Summer) is Roberto's twin brother. He is a yellow skinned monster with red stripes in his body and red and yellow horns on his head. He is Henry, Ben, and Chris' friend.
• Oscar Snifflemonster (voiced by Cree Summer) is a tall green skinned monster, that has three yellow triangular horns with green stripes on it, and a yellow stripe in his belly. He also has freckles like the other male monsters, except for Henry. He is Cobby and Gertie's friend, and is the oldest sibling in the family.^[56] Unlike Denzel or others, he talks into more of an adolescent. Just like Cobby, he is also interested in Astrobix.^[57]
• Roy (voiced by Grey Griffin) and Kelly Snifflemonster (voiced by Hynden Walch) are two yellow monster twins that only have one fang, like Ivor and Hugo (though they are babies), and is one of Henry's friends. Although they are both albino skinned, they have different features. Roy only has one blue stripe and Kelly is albino-blue skinned.^[58]
• Jordan Snifflemonster is the father of Roberto, Hunter, Oscar, Izzy, Roy, and Kelly.
• Kate Snifflemonster is the mother of Roberto, Hunter, Oscar, Izzy, Roy, and Kelly.

The Blobbymonster family

• Fergus Blobbymonster (Voiced by Rob Paulsen) Henry's friend who is the first resident who does not speak, but, only make babble sounds.^[59] He has light blue skin with pink polka dots around his body.
• Fergal Blobbymonster is Fergus's dad, who has a darker skin color than him. He is the second and last resident who does not speak, but only can make the same sound as Fergus. In an episode he and Fergus are taking an ice cream.^[60]

Recurring characters

• Santa Claws (Voiced by Jess Harnell) is a chubby elderly monster who comes every Hugglemas, giving toys and gifts to good monsters and monsterettes.^[61]
• Hollander^[62] aka Captain Hollander (voiced by Rob Paulsen) is an airship pilot. He is blue striped skinned and has a green oval in his torso. He is hard of hearing and tends to mishear what others say to him. He speaks and sings in a tenor voice. He claims that his name is not Jerry and that he loves ducks.

Forename and surname known

• Hildegard Howoooolermonster (voiced by Grey DeLisle)^[63] nicknamed "Hildy" to all her "Best Brain Buddies", is a tall glasses-wearing green skinned monsterette (Cobby calls her a "monster girl" in his song though) student who demonstrated a volcano that makes donuts at the science fair.^[64] She thinks Henry is "smart-a-rooni" but it is actually Cobby feeding him words. She is the tallest monster kid Henry has known, taller than Oscar.
• Kamma Meg Munderclaw (voiced by Grey DeLisle) is a green monsterette with four yellow stripes in her body, and two long purple horns in two sides of her head. She is Summer's friend and attends a sleepover at her house with Izzy.^[21] After her pets and Henry's pets became romantically involved,^[65] Henry brought her a rose in his mouth (which she ate) and then Henry salsa stomped , tossed and dipped her and she ditched Summer and Izzy to go be alone with Henry in his room.^[21] She is Tilda's daughter.
• Matilda Munderclaw also nicknamed Tilda, (Voiced by Grey DeLisle) is a monsterette photographer.^[66] She has green and yellow stripes in her body. She later gets married to Signor Roartonio.^[67] Spelled Matilde in some TV listings.^[68] She is Meg's mother.
  • Shakey Munderclaw ^[37] is Meg's female pet monster dog who has bells on her ears. She and Beckett once kissed while eating spaghetti together^[65] like in Lady and the Tramp.
• Mimi Monstermouth (voiced by Joan Rivers) is a wisecracking and talented pastry chef and a daycare teacher known for baking cakes, pies, and other desserts. and she knows all about babies^[69] She is purple skinned and has blonde hair, whom may be the only monster known to have hair.
• Isabella Roarson (voiced by Geri Halliwell) is Summer's pop star idol. Summer claims to be her "number one fan" who had printed hundreds of copies of her autograph.^[70]
• Roddy Cloudmonster (voiced by Tara Strong) is Henry's mean red friend who can produce clouds using his breath, in which they can be used to hover around.^[71]
• Selena Songmonster (voiced by Grey DeLisle) is the spotlight soloist singer and the camp counselor from Rock and Roar Music Camp.^[72] She is blue skinned with lighter blue stripes in her belly, wears pink lipstick, and has two blue horns resembling long hair.

Surname known

• Mr. Growl (voiced by Tim Whitnall in the UK) is a judge from Grr Factor who once visited the Hugglemonsters.^[73] He is light blue skinned and has purple and blue zigzags on his torso.
• Mrs. Growlburg^[74] or Growlberg^[75] (Voiced by Cree Summer) is Henry's teacher that has blue and yellow stripes, a purple necklace, six nose freckles and pink makeup.
• Officer Higgins (voiced by Tom Kenny) is the only cop of Roarsville. He is light blue skinned that resembles his police hat, only lighter.
• Mayor Roariani (Voiced by Tara Strong) is the recent mayor of Roarsville. Prior to her was Swifty Hugglemonster. She once left Henry in charge. She is a tall monsterette and has three eyes. who has blue afro hair and wears a mayors ribbon^[76]
• Signor Roartonio (voiced by Tom Kenny) is a blue monster who is the owner of an Italian restaurant in Roarsville. He uses phrases from the Italian language and makes Italian cuisine.^[77] He was then married to Matilda.^[67]
• Three-legged Toby (voiced by Rob Paulsen) is a three-legged monster with pink polka dots and yellow and orange horns on his head.
• Smooth Henry, Monsterspeed Henry, and Mad Rhymes Henry were three duplicates Henry had generated after first checking Cobby’s duplicator and realizing his friends and sister had other plans for themselves.
• Mr. Winklemonster (voiced by Tom Kenny) is a monster who sells toys in Roarsville. He wears a green bowler hat and glasses.^[78]
• The Operator (Voiced by Rob Paulsen) is a big blue monster with red and cyan horns on his head and red and cyan stripes in his belly. He wears a red hat.

Forename known

• Max is Milo's friend,^[79] whom was only mentioned by Gertie, along with his sister Eva. He is not discerned throughout the series.
  • Eva is Max's sister. She once already said she saw a Sno-Grr in Mount Roarsome. She was also mentioned by Gertie, but not discerned.^[79]
• Irving (Voiced by Grey DeLisle) is the owner of the Pet Palace and once worked in a bike shop in Roarsville. He has a round yellow belly, striped red and yellow horns and has a yellow nose^[80] He is also a talented musician who can play many instruments. He is often referred to as "Irv".
• Mini-Monsters are puffy puffball-like pets that bounce and make squeaky sounds; they are blue have no mouth there horns are striped purple and green^[81]
• Three-Eyed Rhett (voiced by Diedrich Bader) is a yellow monster whom to be a new classmate that Henry guides in Monsterschool. He is even larger than Estelle, and as his name suggests, he has three eyes.^[82] He wears a cowboy hat which he is shy about taking off because he doesn't have any horns. The hat itself has fake horns coming out of it.
• The Mighty Roarhammer (Voiced by Tom Kenny) is a superhero comic that Henry and his friends love to read. They once redesigned a custom drawn-out comic strip involving the superhero when the previous comic-strip itself ended with a cliffhanger.^[83]
  • Captain Stomper is Henry's superhero alter-ego, who appeared twice in two different comic-books, as well as his appearance. He first wore a red mask, red gloves, and blue boots. An image of a hammer is placed on the middle of his torso. In another appearance, he wore the following: a red mask, red gloves, blue silk suit, blue tight underwear, blue giant boots, and a red cape.^[38] Captain Stomper’s superpower is self-explained in his surname: stomping on the ground that causes a strong impact. It is so powerful, it could even pass through metal.
  • Grrocious Diggity Monster^[83](also known as Super Diggity^[38]) is Denzel's superhero alter-ego, and is Captain Stomper's superhero sidekicks, who also appeared twice alongside Captain Stomper. He is attired in dark blue mask, gloves, belt, and gloves. A cape was added on a later episode. His superpower, associated with his top passion), is excavating through underground tunnels, or more often holes, only for protection, and action maneuver.
  • The Tick-Tockster is Gertie's superhero alter-ego, and is another one of Captain Stomper's superhero friends. An active giant clock was her only attire. Her superpower merely focuses on forward and/or reverse motion, confusing those around her.^[83]
  • Excito-Monster is Estelle's Superhero alter-ego, and is the third and final one of Captain Stomper's superhero friends. Her aptness is merely strength, she is a giant monster. She is attired in a yellow face mask, gloves, blue mask, and dark red boots.^[83]
  • Princess Pirouette is Summer's Princess alter-ego who wore a blue hat and skirt with yellow star and pink polka dots and pink shoes. The main villain of this made-up comic trapped her inside a sealed cage, but was then saved by both Captain Stomper and The Might Roarhammer. ^[83]
• Sonic Growl is a rock group who performed one of their greatest hits "Follow Your Monsterdream" with the Hugglemonster family.^[84] The members of the group are:
  • Shred (lead guitar, voiced by Jess Harnell)
  • Fred (bass guitar voiced by Rob Paulsen)
  • Ted (drums voiced by Tom Kenny)

Other monsters

• Ben (voiced by Cree Summer) is a purple monster with an orange oval on torso that has yellow polka dots all around and orange/yellow striped horns on his head. Just like Oscar, he talks like an adolescent, and sometimes in a western accent.^[85] He merely appears in the background most often, and has only said one line so far, throughout the series.^[86]
  • Stanley is a lime monster with orange oval and yellow polka dots in his belly and orange and yellow horns on his head. He is Ben's twin brother.^[87]
  • Kirby is a cyan monster with blue and cyan horns on his head. He is Ben's second twin brother, and also Oscar and Chris' friend. Just like Ben, he only says one line throughout the entire series.^[88]
  • Samuel is an albino monster with orange oval with yellow polka dots in his belly and orange and yellow horns. He is Ben's third twin brother.
  • Terry is a light green monster with orange with yellow polka dots in his belly and orange and yellow horns. He is Ben's fourth twin brother.
  • Zack is a yellow monster with orange oval and yellow polka dots in his belly and orange and yellow horns on his head. He is Ben's fifth twin brother.^[89]
• Chris is Oscar Snifflemonster's and Ben's best friend who is orange skinned, has light blue horns, and has blue polka dots in his body. His teeth are instead in the bottom of his mouth, like Denzel. He also has light blue horns on his back all the way to his tail, which is a little longer than the other monsters.
  • Rusty is a purple skinned monster who has a light blue horns in his head blue polka dots in his body and blue horns on his back, like Chris; only taller. He is Chris' twin brother. He merely appears in the background, and has only said one line so far, throughout the series.^[90]
  • Peter is an indigo monster with blue and cyan horns on his head. He is Chris' second twin brother.
  • Toad is an albino monster with orange and yellow horns on his head. He is Chris' third twin brother.
  • Carl is a tan monster with cyan horn on his head and cyan polka dots around his body. He is Chris' fourth twin brother.
• Tommy is Henry's green friend, with a dark and light brown striped oval on his torso, who wears red striped shorts. On the second season, he is discerned without them, and are only used for swimming.
  • Jerry is Tommy's little brother who has the same features as him; his feet are two times larger than his, so with his eyes, just like Milo, Gussy, Mini, and Hank.
• Kayla (voiced by Grey DeLisle) is a light green monsterette with pink and blue stripes in her belly. She merely appears on a few locations.
  • Ruby is a purple monsterette with blue/yellow stripes in her belly and blue and yellow horns on her head. She could be considered as Kayla's twin sister.
  • Kiki is a blue monsterette with purple/green stripes in her belly and purple and green horns on her head. She could be considered as Kayla's second twin sister.
  • Atta is a pink-red monsterette with magenta/cyan stripes in her belly and magenta and cyan horns on her head. She could be considered as Kayla's third twin sister.
• Marasol (voiced by Grey DeLisle) is a cyan monsterette, identical to Meg with pink polka dots in her body. She has the indigo and pink horns.
• Gussy (voiced by Hynden Walch) is a little indigo monster, identical to Milo, with cyan polka dots in his body and faded blue horns on his head. He is often seen in the series' backdrop.
• Mini is a little red monster, identical to both Milo and Gussy with cyan polka dots around his body and blue horns on his head. This may authenticate a sibling of Gussy, according to Roarsville Rovers, that time he and other identical figures about to score another point in a soccer game.
• Frank is an albino monster with an orange and yellow stripes in his belly and orange/yellow horns on his head. He is another monster to merely speak one line throughout the entire series.^[91]
  • Jessie is Frank's sister with the same hue as Frank; has the same textures as Kayla. Like Frank, she also has spoken once, and never throughout.^[92]
    • Candice is a red monsterette with red/yellow stripes in her belly and red and yellow horns on his head. She is Jessie's twin sister.
    • Sunshine is a green monsterette with pink/cyan stripes in her belly and pink and cyan horns on her head. She is Jessie's second twin sister.
    • Holly is a light orango monsterette with yellow/orange stripes in her belly and yellow and orange horns on her head. She is Jessie's third twin sister.
• Hank is a little purple monster, identical to Milo, Gussy, and Mini with cyan polka dots around his body and blue horns on his head.
• Mike is a red monster, identical to Frank with cream/lime stripes on his belly and cream and lime horns.
• Steve is a green monster, identical to Frank, and Mike with yellow/blue stripes in his belly and yellow and blue horns on his head.
• Diana is a sky blue monsterette, identical to Meg and Marasol with light purple polka dots around her body and purple horns on her head.
• Bob is a blue monster, identical to Frank, Mike, and Steve with indigo/purple stripes on his belly and indigo and purple horns on his head.