The two villains you describe just happen to be two of the hardest in the game. It's not just you, they kick everyone's butt.
Having the right combination of heroes is pretty important as is understanding how the villains work. Still, it probably does take a few attempts, a mild to medium environment, and a little luck to defeat them.
Having the right combination of heroes is pretty important as is understanding how the villains work. Still, it probably does take a few attempts, a mild to medium environment, and a little luck to defeat them.