The Engineer Bros are 3 benevolent freaks.They consist of a YELO engineer named Retropelet, a RED engineer named Yrtnes, and a BLU engineer named Resnepsid. They are in charge of protecting the world from malevolent entities like The Pyro Bros and Deadish.
They were once 3 engineers that were very bad at their jobs. A meteor struck and shot tons of radioactive energy into them.
Yrtnes can shoot gigantic balls of fire that can be charged, by holding it between his hands (a parody of kamehameha). Retropelet can become Lil, Chew Chew and eat through extremely durable buildings and characters. Resnepsid has telekinetic powers.