A crab that walks, and if hit, will become angry and faster. A second hit will stun it for a short period, leaving it open for defeat. After this period it'll hop back up in a new color and move faster. More info on behaviors and customization options are written in the ASM file.
This sprite was part of Sonikku's Mario Bros. (Arcade) sprite pack, and was resubmitted separately after the remoderation for ease of search and to fit current standards.