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.

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.