Silver is extremely powerful and has a strong body to match his strong Pokémon. However, he can be very arrogant and his threatening nature often leads to his eviction from public places. He calls Ritchie "half-pint" and various synonyms throughout the episode.
Silver has a fascination with Moltres, stemming back to when he saw it one night when he was just a boy. From that day, his ultimate goal was to find and battle the legendary bird. Butch and Cassidy of Team Rocket made use of this in a plan to capture Moltres but Silver stopped them when he learned their full plan. He did get to have the battle he had dreamed of but it had to be abandoned half-way through due to the eruption of the volcano they were on. Deciding he could wait a little longer, Silver stayed on the island in hopes of battling Moltres when it returned.