User blog comment:SonicMario96/Super Smash Bros. Brawl: Sonic the Hedgehog Edition/@comment-1765482-20100703194719

If you're wondering what Boom Typhoon is, it's Amy's Soul Surge attack from Battle mode in Sonic and the Black Knight. I wanted to use a picture of her from Sonic X to make it look like she's unleashing her Final Smash.