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 as a rival in both Festival Mode and Adventure Tours. In the Wii version, he is the rival of Snowboard Cross. In the Nintendo DS version, he is the rival of Deluxe Halfpipe.

''Mario & Sonic at the London 2012 Olympic Games
Jet will be appearing in the third installment of the Mario & Sonic series as a non-playable character again. While it's unknown what his role is for this game, what is known is that he'll be one of the various characters that players can speak to.