A fictional mecha from the Gundam series. It first appeared in Gundam ZZ from 1986.
AMX-011 Zaku III
This cutting edge MS developed by Haman Karn's Neo Zeon is a Zaku in name only - with outrageously improved all-round aspects, most notably four times the thruster acceleration of the Zaku II, and loaded with beam weapons all around, it's far from the average grunt suit its predecessor was. One unit was famously piloted by Rakan Dahkaran before he defected to Glemy Toto's faction, and a number of those found themselves in the hands of the "Sleeves" during UC 0096.
