Beach Koopa

The Beach Koopa appeared in 1990 video game called Super Mario World. A Beach Koopa, originally known as Koopa without a Shell, is a Koopa Troopa that has lost its shell and wears nothing more than an undershirt (and/or, in some cases, boxer shorts), first appearing in Super Mario World. In their original appearance, Beach Koopas appear small and hunched over, but were later depicted as being able to walk around like normal, shell-wearing Koopa Troopas. In the Mario platformers, when a Beach Koopa finds a shell, it reverts to a normal Koopa Troopa.