The latest episode of Legends of Tomorrow focused entirely on the fractured relationship between Captain Cold and Heat Wave, signaling the fact that Snart is moving towards his Citizen Cold arc from the comics where he is actually a hero protecting lives, whereas Heat Wave went rogue and sold out his team to Time Pirates in exchange for his safe return to January 2016 Central city. In the end, Captain Cold seemingly killed his partner or left him marooned, as he became a liability to the whole team.
Following are the major DC comics references used in the episode:
Kanjar Ro: 
He is a space pirate and smuggler who was hired by Manhunter Robots to frame John Stewart/ Green Lantern. He is working from the backside of Milky Way galaxy, he raided Myrtha quadrant and was stopped by Gibbles, Batman and new Blue Beetle (Jaimes Reyes). The title of the story where he appeared was “Slave ship of space”.
Bonnie Baxter: 
Captain Rip Hunter met Eve Baxter, the TV version of Bonnie in the prison when they were captured by pirates. She has appeared many times in the classic time masters story-lines. She was fired from a university after she entered into an affair with the professor, she contacted Rip Hunter who was in the process of putting together a team for a time-travelling expedition. Later she became one of the time masters.
Vanishing Point: 
It is the base position of the Time Masters, in DC comics there is a story titled “Vanishing Point” where Rip Hunter goes back in time with his team to find Batman, it happened right after Final crisis when he was hit by omega beams.
Linear Men: 
The show is trying to blend an alternate dimension beyond time and space controlled by linear mean who can police the time. They are basically sub-set of the time masters.
Booster Gold: 
Time Masters often disguise themselves in different identities to protect the ones they love, one fan theory is that a certain character is actually the son of Vandal savage just like Captain Hunter is the son of Booster gold.
