this random ass warlord seems just to be another Moria a weak ass one who was enjoying his position until he got destroyed , like even Saturn isn't hyping him at all and No one was shocked for his defeat, I can see Ace beating Jinbei having more impact than beating this nameless mf where even Buggy can become one lol
Either this former Warlord had great influence (like Buggy), took this position by other means or he was simply strong enough to get this position. Plus, I think this former Shichibukai sure will appear again. There's no way Oda's just dropping some nameless Warlord without elaborating who it is. It's like saying "Yeah, there was some random Yonko but he was defeated by Shanks" and never mentioning it again.