gatsha_(mobile_suit)
MS-13 Gatsha
Also known as the Gasshia, it is a compact Zeon mobile suit originally created as an amphibious unit and later developed as a close quarters space attack mecha. It is armed with dual missile pods, claws and a powerful short-ranged spiked mace launcher gun (called the "Hammer Gun").
It somewhat resembles the Spartan Destroid mecha from Choujikuu Yousai Macross.