Allen Archer

Allen Archer is a mass murderer who bombed a coffee shop in Hero Worship.

Background
Allen was depressed to the point of suicidal feelings and had low self-esteem. As a result, he was forced to attend numerous support groups. He became jealous of his good friend Grant Ford when he married a woman named Brenda and had a child with her, a girl they named Hannah. Grant, a soldier with the U.S. military, was later deployed to Afghanistan, where he was killed in action. Allen saw an opportunity to live out the happiness he wanted and took advantage of Brenda's grief, eventually getting her to have feelings for him. The two married and Allen raised Hannah together with Brenda, although he continued to feel as if he was living under Grant's shadow. He gradually developed a desire to become a hero in Brenda's eyes, like Grant was. One day, he learned of a bombing at an elementary school that killed a school custodian and became inspired to emulate the incident so he could save innocent lives and be branded a hero. Allen recovered explosive-making manuals that belonged to Grant, who was an explosive ordnance specialist, and used them as guidelines to construct a bomb modeled after the one that destroyed the elementary school.

Modus Operandi
During the coffee shop bombing, Allen used a bomb made of TNT, exactly like the one used in the elementary school bombing. He set it inside a unisex bathroom and allowed a pregnant woman to use it first. Then, once the bomb detonated harmlessly and injured the woman, he would spring into action and save her. However, he unknowingly set the bomb near the gas main, which triggered a second, more devastating explosion.

Known Victims
All of the following were attacked in the coffee shop bombing

Fatalities

 * Seven unnamed people

Injuries

 * Jordan Aguilar
 * An unnamed woman
 * Twelve other unnamed people

Appearances

 * Season Ten
 * Hero Worship