Pilot / Zechs Merquise
The Tallgeese, or Prototype Leo, was the first combat-ready mobile suit and the ancestor of all modern mobile suits. It was developed at the Corsica research base under the auspices of OZ, a subsidiary of the Romefeller Foundation. The Tallgeese was essentially completed by AC 175, when its designers quit the project in reaction to the assassination of space colony leader Heero Yuy. OZ subsequently developed and produced a series of mass-produced mobile suits based on the Tallgeese, while its disgruntled designers set out to surpass their earlier creation.
This experimental mobile suit was designed for maximum power and performance. Huge and heavily-armored, the Tallgeese sports powerful vernier rockets whose immense thrust allows it to fly in Earth's atmosphere. However, its tricky handling and raw acceleration make the Tallgeese imposible for all but the toughest and most skillful human pilot to operate. When OZ ace pilot Zechs Merquise drags this twenty-year-old antique out of storage in order to battle the space colonists' Gundams, it's an act of almost suicidal desperation.
The Tallgeese's usual armament consists of a pair of beam sabers stored inside its shield, and a shell-firing cannon known as a dobergun. While the dobergun's recoil is almost too much for a Leo to handle, the giant Tallgeese has no problem wielding this devastating weapon.