Nigga, you can't say antagonist of each arc, and then throw that as an excuse for Beerus, when in the first arc, the planet was still at risk of him blowing it up.
Also, if you still want to go down that road, then Hit wouldn't count as the main antagonist either, as he has no beef with Goku and co, and only attended the first tournament because he got bribed. You could honestly argue more that Champa was more so the main antagonist of that arc, especially given that after their fight, Hit did the bro move after Goku threw in the towel, by joining him in the 'fuck our GODs squabble brigade', by having himself get ring-outed by Monaka. Something that pissed off Champa something fierce, and had him wanting to destroy his entire team, up until Zeno showed up.