The Koopalings are Bowser's 8 kids. They are troublesome, hard to look after brats (to put it lightly.) Mario has encountered them multiple times, and they have proven to be quite a challenge at times. Originally, there were 7 Koopalings, but most now consider Bowser Jr. as a Koopaling, too.

The Koopalings, from oldest to youngest

-Ludwig "Kooky" von Koopa
-Lemmy "Hip" Koopa
-Roy "Bully" Koopa
-Iggy "Hop" Koopa
-Wendy "Kootie Pie" O. Koopa
-Morton "Big Mouth" Koopa Jr.
-Larry "Cheatsy" Koopa
-Bowser Jr. Koopa

If you do know who the Koopalings are already, who's your favorite? Mine is totally Larry lolz.