Eric Dow

Eric Dow was a person called "King". In the Loguetown fillers, it was stated Gol D. Roger defeated him.

Abilities and Powers
Silver-Silver was a tough man, who was feared as a demon, so it can be assumed that he was a strong person.

History
Eric at one time met Gol D. Roger and challenged him to a duel, but he fell short, and was defeated.