Moren on 06 August 2011
Bowser Jr: Probably a Bowser Kid too, as he was seen with the Koopalings in NSMBWii.
Dry Bowser: Bowser after being burned alive.
Wario and Waluigi: Antagonists, Wario and Waluigi should technically be independent of Mario/Luigi
B. Mario & Luigi: Probably they met with Mario & Luigi with E. Gladd time machine, and come back for sports and stuff.
Birdo: a guy. 
