Rush

Rush is Mega Man's faithful robotic dog, created by Dr. Light to assist Mega Man in his travels. He debuted in Mega Man 3. Initially, Rush was able to transform into a coil, a hoverboard, and a submarine. Since then, Rush appeared in most games related to the original Mega Man series. He appears only in SSF2 with one minor appearance (two if early demos are included).

In the Super Smash Flash series
Rush appears in Super Smash Flash 2 as a part of 's Final Smash, the Super Adapter and appeared as the revival platform of Mega Man in his jet form.

Trivia

 * Rush appears in Super Smash Bros. for Nintendo 3DS and Wii U as a part of a recovery move for Mega Man.