NicosCrabs are enemies from Mega Man Zero 4. It is a crab-like Mechaniloid that carries various objects on its pincers. There are two kinds and both can only run back and forth.
This NicosCrab carries a bomb and fires it out. When it hits a surface, it splits into three blasts. This is found in Fenri Lunaedge's stage and Randam Bandam's stage.
This NicosCrab appears in Fenri Lunaedge's stage only. It doesn't drop parts,but it carries a card key which can be used by Zero when plucked with the Zero Knuckle. The Card Key opens a gate to a Sub Tank. There is only one in the entire game.