This is Rocketgirl, both cub and teen/young-adult (don't know her older age). She turned her early dream of piloting a space ship into a reality! (forget the fact she did pilot one as a cub in his comic XP).
I was only going to do the cub Rocketgirl, but decided it'd be cool to make a whole scene out of it. Though I like how her cub version came out more; her older version seems a bit off to me *shrugs*