Wisp is a character that at the first read-through of her abilities reminded me of the type of character that is typical of a major heroes' rogues gallery (like Spider-Man, Batman or Iron Man)- a theme-based power set (light) who has learned to use their abilities in a variety of ways that would be a big challenge for a single hero and even a small group. The alien merger twist makes for some very interesting story possibilities. I could see running a villain player character campaign and Wisp being an excellent and fun choice to play.