CGI by Edward Arnold

Lyonus is the leader of the Renegades, a group of Thunderians who decided to separate themselves from the others and live in the Dark Canyons, the only place on New Thundera that's uninhabited until now. It's a rough and hostile environment but these cats rule that terrain. Lyonus is the illegitimate son of Claudus before he became the Lord of the ThunderCats and so he and his mother were abandoned, he's always resented Claudus for that. This makes him the older brother of Lion-O, he's the toughest and most relentless of the group, he was appointed the leader of the others.