Happy Monster Band

Main

There are four monsters that make up the Happy Monster Band: Ink, Bluz, L.O., and Frred. All of the monsters' names echo their colors: Ink's trademark color is pink, Bluz's is blue, L.O.'s is yellow and Frred's is red, The main characters were designed by Don Carter. All four of the band members.

• Frred is the band's vocal output who plays electric guitar and is red, referring to his name. While Ink may appear to be the leader, many fans often tend to view and consider that Frred himself is the actual leader. He is also voiced by Rob Cantor and later Kurt Doss.
• L.O. voiced by Zubin Sedghi and later Trevor Gagnon is the other lead singer and plays bass guitar. He is yellow. L.O. is the only monster in the band that goes against traditional thinking, preferring to paint and draw instead of scaring and happens to be viewed and considered a shy introvert, although he sometimes can be quite successful in that. He is the oldest in the band. He is yellow. He is 9-years-old.
• Bluz is the band's keyboardist and has four legs. He often contradicts L.O.'s opinions, stating that monsters should scare and not care about art. He is blue. During the World Tour, he doesn't know about foreign languages, making him almost ditzy, though he is not fully air-headed and also naturally hates seeing others frustrated, down or in a conflict, even if they are his friends in fact. He is also the youngest in the Happy Monster Band. He is also voiced by Joe Hawley, Jonah Lees, and later Jake T. Austin.
• Ink is the band's drummer. She has three eyes and is pink. Unlike the other band members, Ink only sings in choruses. However, she did get a solo verse in "Do the Monster Stomp". During the World Tour, she carries a globe and is fluent in several languages. She is voiced by Hannah Leigh.

Supporting

The first season introduced several characters.

• Roc and Raoul (voiced by Yuri Lowenthal and Sam Riegel respectively) are a two-headed purple monster that are the shows hosts, who speak in rhyme, except while backstage and are also in season 2 and 3.
• La, Dee, and Da are the show's judges, who are only shown the first season and are all bright green, and also in season 4. They are based on Randy Jackson, Paula Abdul, and Simon Cowell.

World Tour

• Akito is the band's pen pal in Tokyo, Japan.
• Joey is a kangaroo in Sydney, Australia.
• Dwight is a giant Italian monster who is often hungry.
• Ravi is a 4-year-old boy who is energetic.
• The Rancher is an introducer.

Season 1 – Direct from Monster Land (2007)

1. "I Will Be Your Friend" – L.O makes friendship braclets to show friendship to his friends. (2007-10-01)
2. "Do The Monster Stomp" The band are learning a new dance, but it's still missing something. (2007-10-02)
3. "Monster Hoe Down" (2007-10-03)
4. "Dirty, Smelly Monster Chores" (2007-10-04)
5. "Scare Up Some Fun" (2007-10-05)
6. "I'm The Best At Being Me" (2007-10-08)
7. "Do Re Me-Me-Me" (2007-10-09)
8. "Even Monsters Cry Sometimes" (2007-10-10)
9. "Get Up And Go Go Go" (2007-10-11)
10. "Practice Makes Progress" (2007-10-12)

Season 2 – World Tour (2008)

1. "A Wonderful Time In France" – The band is in hot pursuit of a monster wearing a beret eating a baguette in Paris, France. (2008-10-11)
2. "The Monster Tangle" – The band visits Argentina and learn a new dance move; the monster tangle. (2008-10-11)
3. "Here In Australia" – The band visits Australia after receiving fan mail from Joey. (2008-10-11)
4. "In India" – The band visits India. (2008-10-11)
5. "Siesta, Siesta" – The band enters the soccer stadium in Spain to play soccer. (2008-10-11)
6. "Konichiwa!" – The band travels to Tokyo, Japan to see their pen pal, Akito and learn how to say hello in Japanese. (2008-10-11)
7. "Yin & Yang" – The band shops Hong Kong and meets Yin and Yang. (2008-10-11)
8. "London Town" – Since their own bus has a flat tire, the band had to take a double-decker bus to go the Buckingham Palace to perform for the Queen of the United Kingdom. (2008-10-11)
9. "At The Rodeo" – The band visits a Texas rodeo after being invited by a ranch owner. (2008-10-25)
10. "The Italian Way" – The band visits Italy. (2008-10-26)