• Victor Garber, Caity Lotz, Brandon Routh, Arthur Darvill and Maisie Richardson-Sellers attend DC's 'Legends Of Tomorrow' Special Video Presentation and Q&A during Comic-Con International 2016.

Victor Garber, Caity Lotz, Brandon Routh, Arthur Darvill and Maisie Richardson-Sellers attend DC's 'Legends Of Tomorrow' Special Video Presentation and Q&A during Comic-Con International 2016. (Photo : Getty Images/Matt Winkelmeyer )

"DC's Legends of Tomorrow" Season 2 is set to start this week. Fans are in for a treat as new heroes and villains will be making their way to The CW's DC TV Universe.

The first season ended with Rip Hunter's team ultimately winning against Vandal Savage, who was deemed to be immortal. However, they have little time to rest as new villains are about to threaten the timeline. In the season finale, they were confronted by Rex Tyler, a member of the Justice League of America who also informed them that their lives are in danger.

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Executive Producer Phil Klemmer spoke with TV Line and he shared some of the biggest events fans should watch out for in the second season. If fans are hyped by the introduction of the JLA, they should also be excited for the Legion of Doom, who will serve as the season's main antagonists.

"Yeah, I think there are four," Klemmer said and laughed. "That's the fun part. We had a singular bad guy in Season 1, Vandal Savage, and his agenda was clear. Going back to that notion of mystery, each of our four Legion of Doom members have their own somewhat competing agendas."

Some are probably upset to see Captain Cold on the side of the villains after he sacrificed his life to save the team from the Time Masters in the first season.

The EP also said that fans should look forward to new character interactions like the Vixen and Rory and the latter when he reunites with Leonard Snart. He is also excited with the addition of Nate Heywood, who will serve as the team's historian.

This will be the first time that a normal human will be part of the team but Klemmer also hinted that he may manifest a superpower later on in the show. After all, he is the grandson of Commander Steel.

Meanwhile, there is a possibility of Black Manta joining the fray, Den of Geek reported. He is one of the key members of the JLA and since the group is making its debut in Season 2, the chance of him joining the other members is very likely.

"DC's Legends of Tomorrow" will air on Oct. 13, Thursday. Lastly, here are some other fan theories on the show's second season.