Jet (Sonic the Hedgehog)

Jet the Hawk is a character from the Sonic the Hedgehog series who is known for his competitive attitude towards Sonic. His voice actor is Jason Anthony Griffith, who also voices Sonic and Shadow.

Super Smash Bros. Brawl
Jet's only appearance is that of a trophy and sticker.

Mario & Sonic at the Olympic Games
He was originally supposed to appear in the original but was scrapped later on. A beta file of Jet was found on the European version.

Mario & Sonic at the Olympic Winter Games
Jet the Hawk appears in the Wii version of the game only as a boss.