Upchuck

Upchuck is a short, pudgy, amoeba-like alien from the Gourmand species known for his large belly and ability to swallow and digest matter. The franchise features two distinct sub-species, each with a slightly different appearance and color palette.Perk Upchuck (Original Series, Omniverse)Skin & Build: Bright jade-green skin with light-green/yellowish markings on his face and belly. He has a distinct potbelly and a small, curled green tail.Head: Features six sprout-like or bulbous growths on the back of his head. He has thin whisker-like lines on his face and a crooked overbite with visibly crooked teeth.Outfit/Markings: In the original series, he wore a black and white open-front suit with white sleeves and leg bands, and had black facial stripes. In Omniverse, he is bare-skinned with green eyes.Omnitrix Location: On his right hand (original series) or left hand/stomach (Omniverse).Murk Upchuck (Alien Force, Ultimate Alien, Omniverse)Skin & Build: Dark, swampy-green skin with a tan/tanned stomach and muzzle. He has dark-green or black-green spots and a short, straightened tail instead of a curled one.Head: Shares the six head sprouts but has a different head shape, green eyes, and sharper, well-aligned canine teeth forming a slight underbite.Outfit/Markings: Lacks clothing in Alien Force and Ultimate Alien but retains thin black stripes on his face.Omnitrix Location: Prominently featured as the Omnitrix symbol on his stomach.Both variants share common features: multiple stretchy tongues used to snare objects, a mouth that can distend to swallow things much larger than themselves, and multiple stomachs capable of converting inedible items into explosive energy projectiles.You can read more about the differences between the two species or discuss character designs on the Upchuck Wiki or Reddit.