Not quite useless:
"Powers: As a consequence of continued mutation, Emma Frost can assume a diamond-hard, nearly indestructible form. Also, she possesses various telepathic talents, including the ability to read minds and influence the thoughts of others."
yeah, that's right......
But i have the best character! i like her very much Lifeguard!
she's connected with all people (and mutants) and when somebody in her vicinity is in danger and harm is happenning to him, her powers avtivate... she covers her whole body with golden, hard metal... on her back show wings... on the list of her powers is also hydrokinesis, breathing under water, super-strenght, shape-shifting and more.... but these powers activate in dependence of danger.
It looks like she was born specially to help people... and that's why i like her! she's so sensitive on others harm... 😄😄😄 she's like a good angel 🙂