Gray tilted down his hat with his right hand, while clenching his left hand. A smirk appeared on his face, unnoticed by anyone else due to his shaded face. Fighting the Riolu with Gible was unfair to his childhood friend, considering the Pokémon was the one who did most of the battling in the first place. "Nidoran." He murmured, and Gible was returned in a flash of gray light, just as Nidoran appeared in the clearing, taking the Quick Attack with only a flinch. 

"Peck."

Immediately after, it's horn glowed white, and the Nidoran rammed the sharp obtrusion at the Riolu, a battle cry escaping it's mouth.