Ash

Background
Not much known about him only that he was once a student at MIT (before he was thrown out for "fighting"), Ash is a genius. He appears to have built his own computer and can write computer programs complex enough to access weather satellites looking for demons. He spends his time at the Roadhouse but is highly regarded by the other hunters. Ash discovered the new demonic signs, but before he could tell anyone, the Roadhouse was burned down.

Season 2
Ellen introduces the boys to Ash. He takes John's research on the Yellow-Eyed Demon and on what appears to be a home-made laptop sets up a 'demon alert system'.

Dean says Ash looks like Lynyrd Skynyrd roadie.

After Sam has a vision, Ash helps identify the location from a logo on the bus in Sam's vision.

Sam turns to Ash to get a list of children who are 23 and whose mother's died in a nursery fire, leading him to follow-up on the recently murdered Scott Carey.

As Dean searches for Sam, Ash says he has some big news he will only tell Dean in person. However, Dean arrives to find the Roadhouse burned to the ground. It is strongly implied that Ash was killed in the Roadhouse fire, Dean having found a charred hand with Ash's watch on it. (Note: Ash was never shown wearing this watch before this episode, when it is seen when he is on the phone to Dean).

Season 2

 * "Everybody Loves a Clown"
 * "Simon Said"
 * "Hunted"
 * "All Hell Breaks Loose - Part 1"

Trivia

 * In Jo's Journal, Ash is referred to as "Miles".
 * This is what he was called in early scripts of 2.02 Everybody Loves a Clown (episode).
 * Ash appears to live at the Roadhouse with Ellen and Jo. He has his own room at the Roadhouse. The sign on *the door reads "Dr. Badass is" and offers a choice of "in" and probably "out".
 * According to Jo's Journal, Ash arrived at the Roadhouse in March 2001.
 * He wears his hair in a mullet style, justifying it as "all business up front; party in the back!"
 * Jo refers to him as a 'genius'.
 * Ash attended MIT before he was kicked out 'for fighting'.
 * Ash drinks PBR