From Bulbapedia, the community-driven Pokémon encyclopedia.
Brother or Father
Is he your rival's brother or father?--DSDark 16:25, 19 April 2007 (UTC)
His father. He refers to your rival as his son.--Angerman 03:31, 19 August 2007 (UTC)
Volkner?
Do you think Volkner is related to them somehow?