Riley is a Torchic that lives in the fiery mountains of Mt Blaze with his tribe of Combusken , Infernape and Charizards as their home and many other homes across the region have lost their evolution stones power as the crystals have been drained so mysteriously but however in a flashback that Riley explains to Milo first explains about the Evolution Stones going out in all types of areas but no pokemon has uncovered the mystery of this phenomenon yet however as Riley explains further details about what happened he explains about Chloes sister and himself at the Evolution Stone where Chloe wanted to evolve but the stone was drained of energy however the energy mysteriously came back but however with a dangerous cost losing your own life and from that day forth as Riley lost someone he cared most dear for he has been struggling to learn moves and trying to fight against wild pokemon but cant as when he tries to use fire moves it reminds him of his past of what happened to Chloe where he doesn't want to use fire moves at all where hes afraid if he might burn to ashes and die just like Chloe.

Rileys personality is seriously careful when it comes to planning or strategizing.  He also jumps into action whenever its needed but is to scared to do much since hes scared of his past.