Wow... Gervasio is quite the hypocrite. He didn't lift a finger, while Leonzio orchestrated the slaughter and kidnapping of dozens, or maybe even hundreds of innocent people, including children and thought about how many people he'd have to kill, once he becomes Zent and yet condemns Ferdinand as evil, for finding a non-lethal way to lock him out of their race.
While he does not come anywhere near the level of cruelty and self-delusion of Detlinde, Gergine and Veronica, he has quite some things in common with them.