Usai

Usai is a clone of Grey created by Katu to replace the original Grey after he went AWOL. He is one of the main villains in The Atticate Wars arc.

Backstory
Usai was created as a clone of Grey by Katu, who needed the latter's strength to make the Equalist more powerful. Usai was different from Grey in many ways including personality, but he still had the same abilities and power, so he could be used the same way. Usai does not care much about anything, but he is willing to fight if he is ordered to, which makes him a powerful asset to the Equalist.

Personality
Meh, gonna write this later. Too lazy right now.