Minion are followers/friends of Thinknoodles and help him with experiments around Think's Lab.
First introduced in the second episode of Think's Lab. Many of them have no reason but to be symbolic.
Kevin, Dave, Holly, Juliet, Chef, Uncle Bob and Grape Jelly are the only Minions who play roles as characters in the Series. Kevin, Dave, Uncle Bob, and Chef are the only ones with one eye and Grape Jelly is the only Purple Minion with a name.