Seven a large black numeral shaped like a "7", living in Mainframe. Seven is male and usually wastes his time away in Al's Diner. Although well-meaning, he has rather poor social-skills, outwardly appearing to be very disgruntled, growling at complete strangers. He apparently has a huge appetite for exotic foods, once seen eating an egg with his long tongue. He also featured in an eating-related joke told by Toque, "Why is everyone afraid of Seven. Because 7 8 9 (Seven ate Nine)". (The Quick and the Fed)
- Seven's tongue and egg in the episode The Quick and the Fed is based on the movie Alien.