Anime Cliche' #131908...
...turning evil instantly makes a character more powerful, and causes their clothes turn black, for no other explainable reason other than they just "turned evil". It's true. It says so right here in the book. It's listed right next to the "Anime Armor Paradox" where-by a girl's protection is inversely proportionate to how much clothing she wears (IE: less is more), and the "Anime Makeup Cliche'", where by any girl that wears make-up in an anime will instantly be evil, a dominatrix and/or a slut. This also followed "Saturday Morning Cartoon Cliche'", where-by all characters must explain what they're going to do before doing it. (Hmm, I sense Goku over by that dark energy. I'd better go check that out instead of standing here talking to myself for a minute).
Curious ... why didn't he just wish for Goku to not exist. Must not be a very powerful all-wish-granting dragon if it can't make someone disappear, and instead can only make them evil for 36 hours.
Overall, animation was good, sprites were a bit blocky at times. Some of the sprites didn't fit the scenes, EG: you used the standing sprite for a lot of the mid-air action. Overall good job. Have definitely seen worse. However, "ZOMG X-TREME FITE SEEN!" flashes are, in and of themselves, cliche', since so many are done these days.