possibly bowser jr. or roy, roy is a bad boy and fierce but a little bit of a blond and bowser jr. is cute but vicious but apears to be bowsers favorite koopa kid.
There is no boo or Koopa Kid in Mario Strikers.
The coolest kid in Monrad changes from year to year. The kid who was the coolest last year, may not be considered the coolest kid this year. Everyone kid has the potential to be the coolest.
the oldest koopa kid is ludwig von koopa aka kooky von koopa. and the 3rd oldest in cartoons.ps strongest.
Bowser Jr. Larry Koopa Morton Koopa Jr. Wendy O. Koopa Iggy Koopa Roy Koopa Lemmy Koopa Ludwig Von Koopa
Well, Morton Koopa is pretty powerful.
Avet Babayan is the coolest kid ever and if you hate him your just jelous that hes cooler than you
Sarah is the coolest, she is a wogolicious cool kid!
Tony Nguyen
kid elric
KidzSearch.com is good
jonny watson
Airships in Super Mario Bros. 3 are the Koopa Kid's way of transportation. Although it's design is quite ridiculous, it can fly. It is basically a large boat or ship with several propellers. Defending the Koopa Kids are two strange creatures, the Rocky Wrenches, and Mini Bowser-Bots. Plus, there are cannons and fire engines, which both damage Mario. Once Mario enters the silver pipe at the end of the airship, Mario and a Koopa Kid are locked in battle. Every Koopa Kid's weakness is their head. Jump on their head three times, and the Koopa Kid will hand over the magical wand.