Maybe he did lose but after he know king has gods blessings he let King absorb him so he can get all blessings
So far I see it his goal definitely create new world and also wipe out old gods so he definitely need more power to get closer to that level
Like Raoul said that guy didn't really do anything directly at him and sister and worst thing he done is just cheating and scaming compare to other doing extream punishment to him is just wasting page
Well they knew that 3 of test subject escaped I guess knowing that alone they need cover up just in case those 3 make contract with other people for time like this
In Vol 2 which after this event we will see Main Antagonist
Edit Now I think about it rather than Main Antagonist is more like Kurumi in DAL some arc fight some arc helping