Doreen Green (Squirrel Girl)Edit
Squirrel Girl has a bushy, three foot long semi-prehensile tail that she can use to cover opponents' eyes or wrap around herself for warmth. When in her civilian identity, she tucks it into her pants, passing off the extra bulge as "having a conspicuously awesome butt."
Kurt Wagner (Nightcrawler)Edit
Nightcrawler possesses a tail that allows him to grab onto objects with relative ease. His tail is strong enough to not only support his body weight but also lift an adult man completely off the ground. It is deft enough to fight with like a sword or blunt object.