Well he is from both games. The character was invented by Arika who co-developed the Street Fighter EX series of games with Capcom. However any new characters in the EX games were developed by Arika and not capcom and therefore they held the rights to those characters. For this reason hey cannot appear in any other Street Fighter game made by capcom. However 2 of the characters, Allen and Blair have both been used in Arika's Fighting Layer game.
Wow. I didn't think anyone else knew about Fighting Layer. It's a pretty good game. It's a pretty good game. It's just like the Street Fighter EX series, but you can sidestep...it's also a little faster. They should've at least put it on dreamcast.