Early life

Daniel West is the younger brother of Iris West. His mother died while giving birth to him. Their mother's death drove their father William to become an alcoholic and abusive towards his children, blaming Daniel for his mother's death. One day, when he was 12 years old, after William ridiculed and hit him, Daniel pushed his father down the stairs, crippling him. Upon realizing that Iris had witnessed the event, and seeing how horrified Iris was by his actions, Daniel ran away from home and never came back.^[3]

Five years later, by the time he was 18, Daniel had become a small-time thug and joined a stickup crew. His first big job involved his crew stealing money from a bank, with him acting as the lookout and driver. Before the robbery, Daniel had sought Iris out in an attempt to reconnect, telling her he was planning to use the money to secure both of them financially. Iris rejected his offer and told him to make amends with their father. While the robbery was successful, their escape plan was foiled by the Flash (Barry Allen), and Daniel got five years in prison.^[3] On the same day, his attempt at escaping from prison was also prevented by Barry who was visiting Henry Allen.^[1]

Encounter with the Rogues

Daniel got early parole and was released from prison around the same time Gorilla Grodd started an invasion on Central City. During the invasion, Daniel attempted to contact Iris and ensure her safety.^[4] He visited her apartment, only to find out it was empty and that she had been missing for three months.^[5] While running away from the gorillas and attempting to save some civilians, Daniel was captured. After his capture, Daniel was placed inside a bus to be sent to the Central City football stadium, as one of the many humans used by the gorillas to create a telepathic illusion of the Gem Cities as having been destroyed.^[6] On the way to the football stadium, Daniel was saved by the Rogues who took the busses full of captured civilians to the Mirror Master's Mirror World.^[7] Daniel attempted to escape the Rogues but he was crashed into Dr. Elias's car which was powered by a Speed Force battery. Daniel was riddled with shrapnel from the crash before being infused with the Speed Force energy, which morphed the shrapnel into a suit of armor that merged with his body. The accident cause Daniel to run back in time but the power was dependent on the Speed Force charge in the battery.

Reverse-Flash

Daniel dubs himself the "Reverse-Flash" and begins killing those with Speed Force abilities to drain their speed so that he could run fast enough so he could run back in time to kill his father. Eventually, the only two remaining with Speed Force energy are Barry and Iris. Barry is unable to sense Daniel through the Speed Force due to his containment suit. Daniel lures The Flash into Dr. Elias' lab where he used his power to go back in time. Daniel's plan to kill his father is backfired when he sees his younger self and Iris come home. Daniel attempts to kill his father while the Flash defends the young Daniel and Iris. The Flash convinces Daniel to not kill his father and so he gives up his Speed Force to the Flash to fix his mistake. The two return to the present and is sent back to Iron Heights.

New Suicide Squad and Death

Daniel is recruited into the Suicide Squad while also discovering that his speed powers have returned.^[8] The Squad have discovered a time bomb in a Turkish village in which they refuse to remove. Daniel decides to run back to the village to do so, throwing the time bomb into an ocean where it detonates. While running back to the group, Daniel trips over on the water and is killed after being sucked into a vortex.^[9]