Leonard Snart

"Pretty pathetic, if you ask me."

- Leonard Snart's past self to the Legends

Leonard "Lenny" Snart (born June 2, 2345), nicknamed Captain Cold by Cisco Ramon (or simply Cold), was a world-class thief from Central City. He was also the older brother of Lisa Snart and the son of the late Lewis Snart.

In 2380 after the appearance of Barry Allen/The Flash, who started endangering his heists with his heroics, Leonard sought to eliminate him. Acquiring the cold gun he had frequent encounters with the Flash, along with his partner Mick Rory/Heat Wave. In 2381 Snart and Barry reached a truce where Barry would let Snart continue his heists, so long as he didn't kill anyone in the process and became an occasional ally of his.

In early 2389 Snart and Mick were recruited by Rip Hunter into the Legends, a time travelling team of superheroes dedicated to hunting down Vandal Savage and preventing his uprising in 2166. Being considered "supervillains" he and Mick were seen as outcasts. Though both initially joined to exploit the potentials of time travel Snart came to be genuine about the cause, and genuinely befriended the Legends. He also became close with Sara Lance/White Canary and developed a romantic interest in her. However Snart's change of heart led to a falling out between him and Mick. Following Mick's betrayal of the team, allying with time pirates to save himself, Snart was forced to maroon him in time which indirectly led to him becoming Chronos. After talking sense into Mick they continued the Legends mission together. When the Legends were in danger of being killed by the Time Masters in the Vanishing Point, after learning they were in league with Savage, Snart sacrificed himself to save his friends and destroy the Time Masters, ending their corruption. Leonard's death was avenged when the Legends finally killed Savage.

In 2390 a younger version of Leonard from 2388, prior to joining the Legends, was pulled from the timeline by Eobard Thawne/Reverse-Flash and recruited into the Legion of Doom to aid in their quest to retrieve the Spear of Destiny.