Yes, that is me in the picture above, blowing ice cold air towards a flaming tanker to keep it from blowing up. That is also the first time I ever used my powers out in public.
My name is Kara Zor-El, and my unusual name should give you the hint that I am not from around here, with "here" being anywhere in this solar system. My home planet, Krypton, was destroyed, and I escaped it on a space ship. I arrived on Earth when I was 13 (your years), but now I am 24.
I had always tried to be normal, and just fit in (I won't go into my childhood here. Suffice it to say it was normal by human standards.). But then the event you see above happened. I heard about the accident above, and I knew I could do something. Mind you, I had heard about other incidents before where I might have been able to help, but the one above struck me as I either act, or people die. I had no choice.
When I got there, a meta-human known as Flash was on the scene, and he had things under control for the most part, except the tanker was dangerously hot, to the point it kept flaming. I took care of it.
But after that, I felt it: The need to help. The need to be what I am capable of being. To be...like my cousin?
That is what my cousin looked like the first time I saw him on Earth. Normally, that would be no big deal, except for the fact I was expecting him to be an infant. We left Krypton at roughly the same time, with him as an infant and me at 13. I got here and he's a big rock-jawed super-being saving the world, and I was still 13. Let me say this now: Space travel is one of the most screwed up things EVER! [rant over]
Anyway, his name is Kal-El, but you probably know him as Superman. Before you ask, the 's' on his chest does NOT stand for 'super': It's our family symbol, for the House of El.
Growing up on Earth, I never felt the need to save anyone, because he was always doing it. But something has changed in the last few years. Villains getting stronger? More villains? I don't know, but he got busy. Which I think led me to decide the world needed another Kryptonian hero.
To be honest, I think I would have done it anyway.