When he was young, Pryce was a skilled Trainer, winning many battles and also treated his Piloswine like family. Unfortunately, the two eventually found themselves up against a trainer with a Magmar. Pryce shielded Piloswine from Magmar's Fire Blast but both were badly injured as a result.
Piloswine left the cabin they were staying in to go get some herbs to help cure Pryce's burns. However, it got frozen on the way back and stayed there for several years. Pryce, believing his Piloswine had abandoned him, changed overnight, becoming an angry, bitter man who believed Pokémon and humans did not deserve to be friends.
Several years later, Pryce and Ash found Piloswine frozen in a block of ice. Thanks to Ash's Pikachu and Cyndaquil, Piloswine was freed from its ice prison, and Pryce was overjoyed. His anger and bitterness melted away when he was reunited with his beloved Pokémon.
Piloswine was later used in Ash's Gym Battle where it successfully defeated Ash's Cyndaquil. It nearly defeated Ash's Pikachu before Pryce threw in the towel, forefeiting the match as Piloswine had become tired.
|Blizzard||Nice Pryce, Baby|
|Take Down||Nice Pryce, Baby|
|Fury Attack||Nice Pryce, Baby|
|Rest||Nice Pryce, Baby|
|+ indicates this Pokémon used this move recently.*|
- indicates this Pokémon normally can't use this move.
- Whilst battling Cyndaquil, Piloswine used a Blizzard that not only caused damage to Cyndaquil but also hid Piloswine from veiw. This was probably due to the Snow Cloak ability. However it should be noted that special abilities had not been invented at this time. Also, in the games, Snow Cloak is only activated if it is hailing.
- Unshō Ishizuka who plays the Narrator in the Japanese version voices Pryce's Piloswine in both the Japanese and English versions of the anime.