Isaac McKinnon is a minor character featured in Red Dead Redemption.
Isaac is a Marshal who is normally found around the Blackwater Police Department Headquarters.
Isaac plays a small role in the missions "The Last Enemy That Shall Be Destroyed", where he is one of the Marshals that accompanies Edgar Ross.
Marston can find Isaac at the police station in Blackwater. If Marston has a bounty, Isaac and some other Marshals will track him all around West Elizabeth and New Austin.
- Unlike most of the Marshals, Isaac's character model is not available in the Outfitter.