Slim is a tall, skinny, teal colored, translucent amoeba with a lighter colored membrane and a bunch of aqua contractile vacuoles floating around inside of his cytoplasm. He has no physical features, aside from a simple face, comprised only of eyes, a mouth, and pointed black eyebrows. His teeth are rounded and more crooked than the rest of his team. He wears a brown fedora with a black stripe on it. In the pilot episodes, "Whoopass Stew" and "Crime 101", Slim's contractile vacuoles were purple instead of aqua. It wasn't until his official series debut in "Geshundfight", he was finally given his current appearance.
Slim is a stupid, empty-headed amoeba, who never seems to understand even the simplest of concepts. Despite all members of his team being idiots, he manages to be the dumbest of them all. He is also the most curious of the bunch, as he is the one, who asks the most questions of the group. His superior stupidity and constant questions get on the nerves of Bossman and lead to him getting insulted by his boss a lot.
- Whoopass Stew
- Crime 101
- Birthday Bash
- You Snooze, You Lose
- Daylight Savings (Non-Speaking Cameo)
- Bought and Scold (Non-Speaking Cameo)
- Film Flam (Non-Speaking Cameo)
- Shotgun Wedding (Pictured)
- Divide and Conquer
- See Me, Feel Me, Gnomey
- Live and Let Dynamo (Non-Speaking Cameo)
- A Made Up Story (Non-Speaking Cameo)
- The Powerpuff Girls Rule!!!