Upchuck (Earth-32)/Dimension 1

Upchuck is the Omnitrix's 1.5 DNA samples of the Perk and Murk races of Gourmand in Ben 10: Omnitrix Unlimited.

Ben as Perk Upchuck
Perk Upchuck has his Omniverse appearance.

Ben as Murk Upchuck
Murk Upchuck has his Alien Force/Ultimate Alien appearance.

Powers and Abilities
Same as their canon counterparts.

Weaknesses
Same as their canon counterparts.

By Ben

 * Perk Upchuck first appeared in Welcome To College, Rook.
 * Perk Upchuck was defeated by Ssserpent.
 * Murk Upchuck first appeared in You Are Begging For Trouble.
 * Murk Upchuck fought Dr. Animo's mutant frog.

By Albedo

 * In The Negative Effect,
 * Murk Upchuck ate a bag of chili fries.

By Albedo (Dimension 99)

 * In 99 For A Change,
 * Perk Upchuck dragged Ben to Dimension 99.

Ben 10: Omnitrix Unlimited

 * Welcome To College, Rook (first appearance; cameo)
 * You Are Begging For Trouble
 * The Negative Effect (by Albedo)
 * 99 For A Change (by Dimension 99 Albedo)

Trivia

 * Their appearance does not change despite the Omnitrix's 1.5 recalibration in Ben 10: Across the 23rd Dimension.