Released in 2005 and based on the RMS-117 Galbaldy β (Beta) mass-produced MS, featured in Mobile Suit Zeta Gundam anime series.
Released in 2005 and based on the RX-110 Gabthley prototype MS, featured in Mobile Suit Zeta Gundam. Piloted by Jerid Messa and Mouar Pharaoh during the Gryps War.
Released in 2007 and based on the RX-121 Gundam TR-1 [Hazel] multi-mode prototype MS. Featured in Advance of Zeta: The Flag of Titans manga where it is piloted by Wes Murphy.
Released in 2008 and based on the upgraded RX-121-1 Gundam TR-1 [Hazel Custom] prototype MS. Featured in Advance of Zeta: The Flag of Titans manga where it is piloted by Wes Murphy.
Released in 2000 and based on the first unit RX-178 Gundam Mk-II prototype MS. Featured in Mobile Suit Zeta Gundam anime. A successor to the RX-78-2 Gundam, only three units were created by the Titans.