Ishmael Polk is the vile patriarch of the Polk family. He is a character in Roanoke primarily portrayed by Frank Collison.
- Ishmael, like his sons, is named after a biblical figure. His name is a reference to the first son of Abraham in the Book of Genesis.
- The Polks seem to be based on the Peacock family from The X-Files episode, Home. Like the Peacocks, the Polks are murdering, deformed, inbred "hillbilly" characters dominated by a sexually abusive mother.