Duchy of Zeon Mobile Suit
YMS-15 Gyan

Pilots /
  Anavel Gato
  Char Aznable
  Ranba Ral

In the course of Giren's Greed, a Zeon player can opt to choose the Gyan as the next-generation mobile suit, rather than the Gelgoog. Thus, every ace pilot who would normally get a prototype Gelgoog may instead have a personalized Gyan.

Illustration by Mark Simmons

Specifications

Model number / YMS-15

Standard armament /
  beam saber x 1
  missile x 56
  hide bomb x 10

Duchy of Zeon Mobile Suit
MS-15A Gyan

This is the mass-produced version of the Gyan, as depicted in Giren's Greed.

Model number / MS-15A

Standard armament /
  beam saber x 1
  missile x 56
  hide bomb x 10

Duchy of Zeon Mobile Suit
MS-15B Gyan High Mobility Type

Pilots /
  Gaia, Ortega and Mash
  Johnny Ridden
  Shin Matsunaga

By analogy to the Gelgoog, you can produce a booster-equipped High Mobility Type Gyan and assign it to the same roster of pilots who ould otherwise get the equivalent Gelgoog. This highly stylized variant is equipped with a huge beam lance.

Model number / MS-15B

Standard armament /
  beam lance x 1
  rocket launcher x 4
 

Duchy of Zeon Mobile Suit
MS-15C Gyan Cannon

This is an alternative to the Gelgoog Cannon, based on the Gyan. Since the Gyan doesn't support long-range beam weapons, its cannons are traditional shell-firing versions, supplemented by forearm missile launchers. Reinforced shoulder armor compensates for its lack of a shield.

Model number / MS-15C

Standard armament /
  beam saber x 1
  cannon x 2
  3 x missile launcher x 2