Hello aternos team! 
I remmember some day to try to use the Superheroes Unlimited Mod in an server,and saw that LegendsCore isn't in aternos,and LegendsCore it's needed for SuperHeroes Unlimited.
I remmember seeing some people talking about it too,but never founded a clairy response so i decided posting it here to finish this discussion.
So,there are some way to add LegendsCore into your Mod List,or you are just going to let SuperHeroes Unlimited in the Mod List without him Core Mod?
Ty 