Brick and Mortar, the two 'robbers' that appeared in the episode "Singularity Event." Brick is a fat man with a beard and light blue eyes. He can shoot green gooey stuff. While, on the other hand, Mortar can shoot literal flaming-pink chemicals that made Stretch's powers malfunction. He has brown hair and almond brown eyes. They both are employees of Rook Unlimited.
Singularity Event-- first appearance[]
Those two appear shortly after a few minutes, in the front of the queue that lined up at a bank sponsored by Rook Unlimited; at a register's office (are those called that?) They were arguing about which flavor is better; regarding of a froyo store they often visit. Jake's father told him to not be like those two.