Bowser Jr. (SSBM AT)

Bowser Jr. is a character from the Super Mario series, where he is the son of the koopa king, Bowser.
===In the Super Mario series===
Bowser Jr. debuted in the game Super Mario Sunshine for the Nintendo GameCube, where he played the main antagonist role as being Shadow Mario. Shadow Mario was a blue, shadow-like version of Mario, that terrorized the island of Delfino, while Mario and his friends vacationed there.
Bowser Jr. has recently appeared in many sports games, such as Mario Kart Wii, Mario Kart: Double Dash!!, Mario Superstar Baseball, Mario Super Sluggers and Mario Sports Mix, to name a few. He also had a major role in Super Mario Galaxy, and it's sequel Super Mario Galaxy 2, as an antagonist that sabotaged Mario so he would not get to Bowser, before he created his own galaxy.
===In Super Smash Bros. Mania===
Bowser Jr. appears in Super Smash Bros. Mania as an assist trophy, where his move comes from Super Mario Sunshine. Bowser Jr. appears in a puff of smoke (like a ninja) and waves his paintbrush, causing him to turn into Shadow Mario. He then runs around attacking people with his paintbrush. Sometimes, Bowser Jr. will not turn into Shadow Mario, and will just run around punching people with his mask on.