A fictional mecha from Gundam. It first appeared in the Gundam 0083 OVA from 1991.
YMS-16M Xamel
One of the biggest land-based mobile suits ever developed by Zeon during the UC, almost slipping into Mobile Armor territory, the prototype Xamel was a huge artillery type MS, carrying an 8-stack rocket launcher, a 20mm seven-barreled Gatling cannon and a gargantuan 680mm super-heavy artillery gun which could destroy almost anything in a single shot.
Despite its immense size and girth, the suit was somehow very fast courtesy of its ultra-high output hover thrusters, arranged similarly to the Dom.