Knight Gundam

The good half of the Musha Gundam Mk-III, he was split in two by Sieg Zeon.

Although he lost all memory apart from the name Gundam, he decided to follow his sense of justice and fight the Zeon family.

Since he was also able to pull out the Electrospear said to have been wielded by the hero, he set out against the Demon King as the Lacroan Hero.

(Source: SD Gundam G Generation Eternal)