|Location||The town of Blackwater, Great Plains, West Elizabeth|
|Affiliations||Law Enforcement |
Bolt Action Rifle
- Unlike most of the Marshals, Isaac's character model is not available in the Outfitter.
- He appears to share similar facial features with Archer Fordham, and is often mistaken for Fordham during "The Last Enemy That Shall Be Destroyed" as he stands near Edgar Ross during John's death.