Poison immune, energy absorption, and heavy hitter, might not be flashy but you could have pull DD classic, Spiderman classic, Rhino or Juggernaut, or Deadpool xforce
She is a solid champ that hits really hard and can take out opponents fairly quickly. Being poison immune is a plus, so she has some usefulness. She may not be a god tier, but for a 6*, you definitely could do a lot worse, like deadpool (x-force), antman, or either of the cyclops champs.