What is the name of Gru's high school rival in Despicable Me 4?

Gru’s high school rival in Despicable Me 4 is Maxime Le Mal.

Maxime is introduced as a former classmate of Gru from Lycée Pas Bon, the school they attended. He believes Gru stole his talent-show act, turning an old school grievance into a long-running feud.

Maxime becomes the film’s central antagonist after enhancing himself with cockroach body parts. His inventions and revenge scheme force Gru’s family into temporary relocation under new identities, while the Anti-Villain League works to stop him.

The character is voiced by Will Ferrell and has a French accent, a cockroach-themed appearance, and a girlfriend named Valentina. He is distinct from earlier Despicable Me villains: Vector appears in the first film, El Macho in the second, and Balthazar Bratt in the third.