he was younger, and she was previously married to Dr. Ogden Wernstrom. Her given name is revealed to be Carol in "The Tip of the Zoidberg". In the episode "Leela and the Genestalk", Mom works out of "Momsanto", a floating castle that hosts a genetic engineering facility. Its name is a reference to Monsanto, an American agricultural company known for genetic engineering of plants. Walt, Larry, and Igner Walt (voiced by Maurice LaMarche), Larry (David Herman) and Igner (John DiMaggio) are Mom's three sons, who are often on the receiving end of her verbal and physical abuse. It is revealed in Bender's Game that Professor Farnsworth is Igner's father, and other scenes imply he fathered all of them. Omicronians The Omicronians are an alien race from the planet Omicron Persei 8. Lrrr (, voiced by Maurice LaMarche) is ruler of the planet Omicron Persei 8, and always introduces himself as such. He aims to project a strong ruthless demeanor of a conqueror but often ends up showing a sensitive side. He is currently married to Ndnd, his second wife, with whom he has one son, Jrrr (, voiced by Lauren Tom). His first major appearance is in the episode "When Aliens Attack". In "Lrrreconcilable Ndndifferences", he claims to have murdered his father for his cape. Ndnd (voiced by Tress MacNeille, pronounced /ʌnd'ʌndʌ/), is Lrrr's second wife. She is overbearing and bossy, often nagging Lrrr to eat more healthily and fulfill his duties as supreme ruler of Omicron Persei 8. In "Lrrreconcilable Ndndifferences" she seems entirely unconcerned by Lrrr's infidelity with another Omicronian woman but is deeply upset by him listening to Leela's nagging over her own. Their marital problems also feature heavily in "Spanish Fry". Robot Mafia The Robot Mafia is a small crime syndicate operating out of "Fronty's Meat Market" and "Small Bill's Laundry", who periodically dine at Elzar's, hijack shipments of Zuban cigars, arrange "accidents" for robots who act against them, as well as other unspecified Mafia-related illegal activities. They are made up of: The Donbot (voiced by Maurice LaMarche) – The leader of the Robot Mafia. He is often depicted to be oblivious to various plots against him, particularly repeated infractions by Bender, including having sex with the Donbot's wife, having sex with his daughter, stealing from the Donbot, and stealing the Donbot's own foot. Clamps (voiced by Maurice LaMarche) – A goonbot with an angry, aggressive