Introduction
Larry is the youngest of all the Bowserkids and in Super Mario Bros 3 he awaits Mario at the end of the first world, the Grass Land.
    In Super Mario World he guards father Bowser's castle and battles with Mario at the end of his well defended castle on small rock floating in the middle of an big lava ocean. By jumping on Larry's head a couple of times Mario will soon make him fall of the platform and into the hot lava.

In The Adventures of Super Mario Bros. 3 and Super Mario World cartoons, he was named Cheatsy Koopa and was usually scheming up the Koopa's next plan, sometimes with Kooky. A very common animation goof regarding Cheatsy was that his green head was often colored orange, the same color as the rest of his body.

Cheatsy Koopa.

One particular shot in the episode "The Beauty of Kootie" even had his head mistakenly colored purple in the shot where he says "Tell that to the Mario Bros.," then in the Super Mario World series, Cheatsy's hair was given a lighter gray-green color and drawn a tad thicker. This happens to the other koopalings too.

There are several physical differences between Larry and Cheatsy: Larry's hair is pointed upwards but Cheatsy's hair was flatter and much more untamed; Cheatsy was almost always seen squinting and was given an overbite. He appears the most of all the Koopalings. Cheatsy was voiced by James Rankin. Additionally, in the continuity of the cartoons, Hip and Hop were the youngest Koopalings, not Cheatsy. 

 

 

Cheatsy Koopa [Larry] in "The Adventures of Super Mario Brothers 3".