I've had this idea sitting around for awhile, and finally got the time to do it! Since Chernabog from Fantasia was a boss in the first KH, why not the Firebird from Fantasia 2000 in KH2? Also put Sora in Wisdom Form, since it seems magic would be most effective against this guy...
Had lots of fun coloring this, especially with the fire and lava effects. XD
(Also, PLEASE don't comment telling me if this actually does or doesn't happen in KH2, it was just a fun idea and I wanted to draw it. If the firebird *does* show up, let me be pleasantly surprised. If it doesn't, oh wells.