Leonard Snart

is a thief/superhero, who joined the Avengers, along with his partner in 2012.

Early Life
Leonard Snart was born on June 2, 1972, in the Bronx. In 1975, Leonard's father was arrested for attempting to steal the Maximilian Emerald, causing him to be sent to jail for 5 years

When his father was released, he began to take his anger out on Leonard. His sister, Lisa, born sometime after 1980, and was equally abused.

Lewis turned to crime, mostly breaking and entering, bringing his young son along so that he could help him to disable the security systems during the heists. Sometime later, Lewis was sent to prison.

Leonard's grandfather took him and his sister to a diner right across from Bronx Precinct, named the Motorcar. Snart kept going there in his later life to listen to police radios and learn their response times.

While Lewis did frequent sentences in and out of prison, Leonard mostly raised Lisa himself and thus shares an almost parental bond with her, despite their vastly different personalities. at some point after this, him and his sister became estranged.

A turn for the worst
While in juvenile detention at the age of 14, Snart was jumped by several guys and almost stabbed with a shiv until Mick Rory intervened and defended the scrawny teenager, the two forming a close partnership.[6] He dropped out of high school and eventually became a bank robber, putting together a crew. Every six months or so, they arrived in Central City to case a job for a few weeks and disappeared after stealing their target.

Meeting the Avengers
by 2011, the duo abandoned their crew. They later kidnapped Natasha Romanoff, who tricked Mick Rory to revealing all their information. When she learned that Barton has been kidnapped, see quickly defeated them and took them to the S.H.I.E.L.D Hellicarrier. They were put into a cell, where they were interrogated by Maria Hill.

When the mind controlled agents attacked the Hellicarrier, the duo chose to assist the Avengers instead of escaping.