Shellcreeper

Shellcreeper appeared in 1983 video game called Mario Bros.. Shellcreepers are green-shelled turtles that first appeared in the Mario Bros. arcade game. They are the first turtle enemies to appear in a Mario game, making them the conceptual ancestors of the Koopa Troopas, which appeared two years later in Super Mario Bros.. It is also shown that Shellcreepers wear undershirts and shorts when outside of their shells; Koopa Troopas first appeared out of their shells in Super Mario World wearing a shirt, and in Super Mario World 2: Yoshi's Island wearing shorts. The trophy descriptions in Super Smash Bros. for Wii U state that the Koopas apparently evolved from Shellcreepers; however, the Japanese text specifies Koopa Troopas.