Ratatouille. He is voiced by Peter O'Toole.
The name Ego means "self-esteem," from the Roman meaning "I". This would allude to a certain level of vanity and arrogance on the part of Anton. He has nothing but contempt for the people around him combined with a cruel sense of humor and something of a sadistic streak. However, unlike Skinner, he is not presented as a man of pure evil. He shows a great amount of humility and indeed sentiment after eating Remy's dish of ratatouille and learning the secret of Gusteau's restaurant.
Ego is extremely passionate about food, claiming, "I don't like food, I love it", and claims to refuse to swallow food that he doesn't like, which explains why he's so thin.
He is a man of great taste and distinction, showing a knowledge of fine wines as well as food.
Ego is intelligent and sophisticated and in terms of dress sense, he appears to be something of a dandy, completing his dark, dapper suit with a chic scarf.