|First appearance||Mars University|
The Fratbots were a group of robots who were active members of the robot fraternity Epsilon Rho Rho (ΕRR). They had a reputation of pulling fire alarms, stealing liquor and desecrating human corpses. When Bender came along and revealed that he was former member of the ERR-fraternity, the current members begged him to teach them how to be cool, because, as they put it, "We're the lamest frat on campus! Even Hillel has better parties than we do!"