Poison and Tank are two of the "cool" eighth-graders at Hazelnut Middle School.

We know very little about them, aside from the fact that they hang out with Sketch and Hush a lot.

They rarely speak, and when they do it's always in the 8th grade lingo. Their longest conversation in the series consisted of twelve words and occurred in "Presenting Stewart Walldinger".

Trivia[]

• In "Sketch 22", their debut appearance, Meredith Scott Lynn voices Poison while Brittany Murphy voices Tank. Interestingly, in the episode "Presenting Stewart Walldinger", the actresses switch roles, with Murphy voicing Poison and Lynn voicing Tank.