Evolution wasn't released in the US for Neo Geo Pocket Color. The US got:

Bio Motor Unitron (Pokemon style but with robots)
Dive Alert: Becky's Version
Dive Alert: Matt's Version (same game got two versions a la Pokemon Red & Blue)
Faselei! (strategy RPG)

That's it. If you want to stretch the definition of an RPG, you can throw in Dark Arms, but I'd consider that an Adventure game.