Rio

Rio is the first Pokemon that Nate had obtained in the Battle Adventures series.

History
Rio first appears as one of Nate's main Pokemon and is his partner that was given to him during early childhood before the start of his journey. Rio appears alongside its trainer when they returned to Aspertia Town years later.

Character
Rio is very curious and brave when it comes to fighting alongside his trainer. Mainly, Riolu has shown to be very annoyed by its trainer's forgetfulness when it comes to type and battle statistics, but is very friendly towards its comrades and respected his trainer who shares a close bond with him.

Trivia

 * Rio is short for Riolu, but is the same name as the place.