List of Mech-X4 episodes

Ryan Walker, a high school freshman, discovers he has technopathy- the ability to contol technology with his mind. His newfound powers awaken MECH-X4, a 150-foot robot that he is able to control and defend Bay City High when a monster descends upon the school. Ryan enlist his two best friends, Spyder (in charge of the robot's weapon system), Harris (in charge of the robot's defense system) and his brother Mark Walker (who fixes multiple malfunctions within the robot) to help him operate the robot. Afterwards, billionaire CEO of Harper Futuristics, Seth Harper becomes intrigued by the robot and decides to meet it. However, Principle Grey, principle of Bay City High and the one making the monster by mixing animal DNA, deploys another monster that MECH-X4 force it to retreat but almost at the cost of Harris' life.

The crew of MECH-X4 trace the tentacle monster and kill it. However, some ooze from the monster prior death covers Harris. The ooze slowly turns Harris into a raged monster when his tempers rise. The team (Ryan, Harris, Mark and Spyder) goes on a mission to find a cure. In the end, Leo (inventor of MECH-X4) is revealed to be alive and held captive by the mysterious Mastermind.

After failing to crack open the monster's heart retrieved from a dead monster, the team sneak into the Harper Futuristic headquarters by causing a false alarm. They get access to a powerful laser that crack opens the heart. However, Grey, dressed as ninja, takes the heart from Ryan (who wears a hood to conceal his identity) after threatening to harm Mark. Eventually, Harper and security catch them. However, they get away with their mischievous deeds when Harper shows love interest in Ryan and Mark's mother Grace Walker. Later, Grey deduces Ryan as MECH-X4 main pilot.

Ryan, Spyder and Harris attempt to rescue Mark and reclaim MECH-X4 from Grey and her forces. Ryan unlocks the ability to control the robot from outside. Meanwhile, Grey and her assistant Davage fail to interrogate Mark for answers about the other pilots of MECH-X4. Mark escapes Davage, puts their systems offline and reunites with friends before assembling in the robot to defeat a monster summoned by Grey. The team learn that Grey is evil. During the battle, Davage dies and The Mastermind, who was scheduled to make a visit, retreats upon arrival after witnessing the chaos. Aftermath, Ryan returns home and finds Grey talking to his mother. Grey warns Ryan about the Mastermind's plan to end the world and join forces after fearing for her own life.

Guest stars: Ryan Beil as Leo, Ali Liebert as Mysterious Figure/Grey, Peter Benson as Seth Harper, Crystal Balint as Grace Walker

Guest stars: Crystal Balint as Grace Walker, Ryan Beil as Leo

Guest stars: Ryan Beil as Leo, Dan Payne as Traeger