Dr. Animo and the Mutant Ray

Plot
When Ben tries to take apart the Omnitrix to see how it works, he ends up breaking off its face plate causing the Omnitrix to malfunction. All of his alien transformations fuse into different, and rather useless, aliens.Dr.Animo has escaped from prison and is looking for revenge .While at the Gator-fest the team bumps into Dr. Animo's toad (in Ben's words Croaker) and finds it's ending the festival.Ben transforms, but ends up as Stinkarms (a combination of Stinkfly and Fourarms).The trio tries to find Animo's base located in and abandoned observatory. Ben uses Diamondmatter to get them through the swamp safely.They find Animo and Granpa Max is mutated into a giant Stinkfly/slug by Animo's new mutant ray, which uses the face plate of the Omnitrix to obtain alien DNA and power.Ben becomes Heatjaws and defends Dr.Animo and his mutants. Gwen then reverses the face plate inside the device and it reverses Grandpa Max's mutation.After Ben beats Animo, he fixes the Omnitrix by putting the face plate on the Omnitrix backwards while in alien form. When he turns back the Omnitrix is back to normal.

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Max Tennyson

Villians

 * Dr. Animo

Fusion Aliens (after the ring gets removed) used

 * Stink-arms (Body of Fourarms, features of Stinkfly)
 * Diamond-matter (Body of Greymatter, features of Diamondhead)
 * Heat-jaws (Body of Ripjaws, features of Heatblast)

Trivia

 * Ben says 2 fusion aliens at the end which are Diamondmutt and XLRfreak even though Ghostfreak had escaped the omnitrix in the previous episode.
 * Animo's Frog reappears in this episode, but is not seen again after it.
 * From this point on, Animo tried to get the Omnitrix to extract the DNA inside to create a mutant army of animals in the original series (in the sequel series Alien Force and Ultimate Alien he just tries to defeat Ben).