What is the name of Gru’s laboratory assistant in the Despicable Me films?

Gru’s laboratory assistant in the Despicable Me films is Dr. Nefario.

Dr. Nefario is an elderly inventor who designs weapons, vehicles, and other machines for Gru. His inventions help Gru carry out elaborate plans, including the technology used during the Moon-heist scheme in the first film. He works from Gru’s underground headquarters alongside the Minions.

Russell Brand voices Dr. Nefario in the first two Despicable Me films. The character is known for his scientific expertise, absent-minded behavior, and loyalty to Gru, although he sometimes questions Gru’s shift away from villainy.

Dr. Nefario should not be confused with Silas Ramsbottom, the director of the Anti-Villain League. Nefario is Gru’s private inventor, whereas Ramsbottom represents the organization that recruits Gru for missions. The character’s name is spelled Nefario, not “Nefarious,” despite the villainous wordplay.