Also known as: RMS-141, ゼク・アイン
A Mecha from the Gundam franchise. It first appeared in the 1987 photo novel Gundam Sentinel.
RMS-141 Xeku Eins
A mass-produced, general purpose, heavily armed and armored Mobile Suit with a design inspired by The O, fielded by a rogue group of Earth Federation officers and former members of the Titans called "The New Desides".
The Xeku has 3 configuration types for close, mid and long distance combat with different modular weapon configurations for each battlefield function.
In Real Life it was designed by Katoki Hajime.