Dallas is taken by Erin before she dies in the book, Hidden .
He has an affinity for electricity.
He first appears in the book, Hunted .
Dallas and Stevie Rae had a little fling before he found out about Rephaim . Dallas flipped out and Stevie Rae chose Rephaim over him. This lead Dallas to become evil.
His last appearance was in the book, Revealed . He was beheaded by Kalona by Thanatos command. The reason for his death was that he tried to kill Stevie Rae after Erin was killed.