The Lonious Monk
Celestial Souljah
I'm not sure Vegeta can take him yet but I do like that he's observing and used his head to investigate the area first. He already seemed to piece together what happened to Granolahs people. If this goes on as long as the Moro arc there maybe enough time for another enemy lol. I think Granola will eventually fall back and just live out his remaining life in peace after getting the truth. Orrrr he could very well be sacrificed lol. I do think Freiza will step in and those other heater members are still plotting something as well.
My guess is that Vegeta will realize Granolah's people were wronged by the Saiyans and won't want to kill him. He'll lose, but he'll realize they aren't fighting a villain.