Eliot is a teenage boy who resides in Lebanon, Kansas
Standing outside the Lebanon Vista movie theater with his friends, Eliot begins talking about Sam and Dean and how mysterious they are around the town, and how he's seen and heard weird things around them. Stacy tells him to stop for creeping Max out just as Sam and Dean pull up and park the Impala in front of the theater. Eliot continues speculating on where Sam and Dean come from, but continues to get blown off by his friends.
When Max decides to steal the Impala, Sam and Dean quickly confront Eliot who only claims to know Max's first name. After his confrontation with Sam and Dean, Eliot races to the party to warn Max, but is similarly blown off by Stacy until Sam and Dean show up and claiming to be FBI and kick everyone out of the house. Still curious about the brothers, Eliot throws caution to the wind and runs back inside while chased by a worried Stacy and Max who all witness the ghost of John Wayne Gacy burn away.
Sam and Dean sit the three down, and rather than come up with an explanation, they tell the truth about the supernatural, which Eliot excitedly exclaims he "knew it" and are told to keep what they know as their secret to avoid a panic. The trio are understanding of this and agree to the promise.
In the alternate timeline, Eliot is in the restaurant when Zachariah and Castiel arrive demanding answers for who messed with time. Zachariah and Castiel threaten to kill everyone within before Sam and Dean intervene, sending everyone away before killing Zachariah and banishing Castiel.
Later that night, after the original timeline is restored, Eliot is seen walking the streets alongside Max and Stacy, excitedly talking about the Winchesters and what they had revealed about the world to Eliot and his friends.
Eliot hangs out with his friends and annoys them with his rants about monsters. They notice Jack and recall his status with Sam and Dean. The trio tell him that they of the brothers' activities and ask him to hang. Eliot learns more about monsters from Jack and ask if they can be friends. They invite him to their hangout. While studying he watches Max flirt with Stacy, but Eliot breaks off their moment. Jack appears and talk to them about monsters and they are amazing details, to Eliot's joy. Soon he shows from the angel blade that he played with as well as his powers but he accidentally stab Stacy in the stomach and Max comes to her side as Stacy is in pain. Eliot tells Jack to stay away as Max nearly calls an ambulance but Jack uses powers to heal her but the teens are now scared of him and his powers. Eliot tells him that he doesn't know what Jack is but tells to stay away from them and leave the area.