The Koopalings are Bowser's kids.
Larry is three, Morton is six, Wendy is nine, Iggy is twelve (but he shares my birthday so he'll be 13 soon), Roy is fourteen, Lemmy is eighteen and Ludwig is twenty-one.
Larry Koopa likes sports, but doesn't have a clue about how to play any. He likes to watch his brothers play music, and is very attached to Roy. Larry also has a phone which he bites resulting in the screen cracking. He's clever for his age and can type, but he types and writes words like they're pronounced.
Morton Koopa, Jr. loves music and singing. He once attempted to host a Q&A column in the newspaper. However the questions were particularly useless (Dear Morton, how do I get perfect make-up? How am I supposed to know?) and Bowser ended it before Lemmy and Larry issued another argument.
Wendy O. Koopa likes to put on make-up, but being nine, Bowser prohibited her from using anything other than lipstick. Wendy has purple hair, which she completely hides in her bow because it isn't salmon pink, which is what she likes.
Iggy Koopa made the Magic Scepters after a debate with Bowser over how it would be safe for Larry. When he was putting the chemicals into the sceptre, Larry called him a psychopath, and Iggy shooed him out. Larry was forbidden from the weapons for a month.
Roy Koopa makes concert posters for concerts he never actually does. He has a band with Lemmy, Ludwig and Morton. Their songs have never made it out of World 8. He looks exactly like his cousin Bully.
Lemmy Koopa bounces on his ball, which he's dying to show on Mushroom Kingdom's got Talent. However he's busy with conquering the Kingdom, so the show will be over forever by the time he's got there. He has a bitter rivalry with Larry.
Ludwig von Koopa used to play with puppets and blocks, which led to his musical talent (according to him, of course). He has a rivalry with his cousin Kooky, who he says is "from a freak show".
