Combat Enhancers

"One red to get you going. Two whites to keep you even. One blue to bring you down." "Got it."

- Kozlov and Will Simpson

The Combat Enhancers were created by a military program. They affect the adrenal gland, causing the subject to constantly produce adrenaline. This allows the subject enhanced strength, immunity to pain and fatigue and a greatly accelerated healing rate.

History
Will Simpson previously volunteered for a drug experiment to increase his strength conducted by Doctor Kozlov; however he left the program as he struggled to keep control of his rage while on the drugs.

After an explosion engineered by Kilgrave with a bomb Will himself had planted, Will was left in critical condition, but refused to see any doctor except Kozlov. Upon reentering the program, he was told of a new protocol in place for the enhancers following an incident in Damascus. He would be allowed one "red" to "bring [him] up," two "whites" to "keep [him] level," and one "blue" to "bring [him] down." However, driven to kill Kilgrave for his many crimes, Will took an additional red as soon as Kozlov left. His heightened adrenaline led eventually to insanity, causing several murders along with the attempted murder of Jessica Jones and accidental assault of Trish Walker.

Trish Walker also took one of the reds in order to fight back against the homicidal Simpson in defense of Jessica, who had already suffered a broken rib. Despite Simpson's warning that without blues to calm her down, she would have adrenaline so high that her brain would forget how to breathe, and that Simpson himself would not need a blue for several hours on account of having built up a tolerance to reds. Though she managed to knock Will unconscious, Trish did suffer those side effects, and needed to be resuscitated in an ambulance to bring her down from the stimulant.

Capabilities
Will Simpson takes different colored pills, known as combat enhancers, to produce different bodily effects. These pills include red, for increased adrenaline; white, to stabilize the heightened level of adrenaline; and blue, to relax him. "And that fresh burn on your arm confirms it." "I didn't even feel that."
 * Superhuman Strength: Due to the effects of increased adrenaline, the user is able to easily match Jessica Jones' own advanced strength.
 * Superhuman Stamina: Due to the effects of increased adrenaline, the user's body produces far less fatigue than normal human beings.
 * Regenerative Healing Factor: Due to the effects of increased adrenaline, the user's increased metabolism grants them an accelerated healing system, allowing them to heal from cuts, broken bones and bruises overnight.

- Jessica Jones and Will Simpson


 * Pain Suppression: Due to the effects of increased adrenaline, the user can function with catastrophic wounds on their body without showing any signs of pain or fatigue.

Appearances
In chronological order:
 * Jessica Jones
 * Season One
 * AKA Sin Bin
 * AKA 1,000 Cuts
 * AKA I've Got the Blues
 * AKA Smile (mentioned)