Model number: OZ-00MS
Head height: 17.4 metres
Dry weight: 8.8 tons
Armour materials: titanium alloy
Armament: Dobergun x 1; Beam saber x 2

Pilot: Zechs Marquise

This was the very first mobile suit and the Gundam's designs were based on this suit. This suit was rejected by Oz as it was too expensive and difficult for the Oz soldiers to pilot it. So the design was reduced down to the standard leo mobile suit. Therefore the specifications of the Tallgeese are above the average abilty of a normal leo suit. The Tallgeese is the only suit that Oz owns which is capable of fighting a Gundam.