I'm in a similar situation. Although I already dropped zeta mats on his leader (I feel like that is usually the best first place to start since that is generally something that can boost a whole team rather than one toon). But I can't decide on the other two. I'll have enought mats to drop one more zeta on him today. I'm thinking conqueror would be best since it'll it'll keep him from being attacked multiple times, but I the Villain ability would be great for keeping him alive and kicking...