Butterfly With Laser Gun

The Butterfly Bandit appears in "The Other Tarts." He robs Finn and Jake of the last two Royal Tarts as they're traveling through the Desert of Doom. After he threatens them and shoots at them with his laser gun he flies away with the tart container, saying he has to "book it to Nana's for brunch." He is last seen flying through the air, his body paralyzed after having taken a bite of a poisoned tart.

Trivia

 * He seems to be very strong because, despite his size, he is able to lift an Anti-Gravity Tart Chamber.