Some good superhero names?

I have:

• A boy who controls plants
• A girl whose main skill is hacking and she doesn't want a codename but the boy decides to come up with something totally dorky for her. Later, she gets emotion manipulation.
• A girl with fire powers
• And a really cliche superhero name for this all-around, American boy who's actually the bad guy.

lmaoooooooo
thank you!!
I love the ideas for Dhara (hacker), I can totally see Yoon-gi calling her that
I'll see if I could use either Cinder or Ember! Same with _____ Man, though I came up with the title of 'Crimson Dynamo' in the last hour… should I use it?
And sorry, but I'm not entirely sure for Yoon-gi. He's not a very… poisonous or badass person, and he's a soft boi… anything else that sounds cool without being too deadly?

dear God
that p u n