Rick is a very cocky and somewhat unfriendly young man, typically calling the player and Rodney a loser, and his primary motivation throughout the game is to become the greatest Trainer in the whole region.
Quotes
At Serpentine City
At Thundrome Pass
At Rustbolt City
At Brushus Town
At Battle Bridge
At Docking Port
Sprites
Rick's Trainer sprite from Solar Light & Lunar Dark