Toby

Toby was Alex Sawyer's best friend, as well as partner in crime. Before Alex went to Furnace Penitentiary, he and Toby robbed houses.

Death
When Brandon said he was done hitting up houses, Alex and Toby decided they would go out robbing a very rich house themselves. While in the process of robbing, The Blacksuits and Moleface broke in and Toby screamed. The Blacksuits knocked Toby to the ground, then Alex ran in the room. Moleface took out a pistol and shot Toby in the head. They framed Alex, and sent him to Furnace Penitentiary.

In other books
Toby is constantly mentioned throughout the series, mostly in sadness. Alex never really got over his murder.