- "Warren, your eyes are dark."
- ―Riley to Warren[src]
The Short Second Life of Bree Tanner
Warren was mentioned when Riley told him that his eyes were dark and sent him out to hunt with four other vampires: Heather, Jim, Logan and Fred. Warren's eyes being dark suggests that he was turned before Bree, since her eyes were still described as bright red.
When Riley told the newborns about the Cullen coven being dangerous and wanting to target them, Warren and everyone else, minus Fred and Bree, were forced to share the same mindset to cooperate and destroy them.
This treachery led the entire army to its demise, and Warren was killed in the battle with the Cullens and the Uley pack.
|Seattle newborn army|
|Leaders||Victoria • Riley Biers|
|Group leaders||Raoul • Kristie|
|Members||Adam • Casey • Dean • Diego • Doug • Fred • Heather • Jen • Jim • Kevin • Logan • Sara • Shelly • Steve • Bree Tanner • Warren|