In the fifth season of Green Arrow, Captain Lance has already encountered his daughter's double body, the Black Kraken from Earth-2, while Sarah, a member of the legendary team, has not yet met her sister's double black kraken. Given that The White Canary has been busy traveling in time in the last two seasons, it is likely that she is unaware of the existence of her sister's duo Black Kraken.
But there are signs that the Lance sisters from different earths will officially meet in the next season of Green Arrow and Legends of Tomorrow. At last weekend's "Heroes and Villains Fan Conference" in London, Katie Cassidy, the black kraken, said about the plot, "When Sarah, the 'White Canary' of Earth-1, meets Laurel of Earth-2's 'Black Kraken', this is a scene we will definitely see in the next season, so how do the two characters deal with this scene and deal with a completely different relationship." I don't know how the Black Siren would react to this, because I think she's a rather mysterious person. ”
In the world of Earth-2, the Black Kraken lost his sister Sarah ten years ago, and it was Robert Quinn who returned from Purgatory Island ten years ago, while Oliver and Sarah did not survive. In addition, according to the plot of the fifth season of "Green Arrow", the Black Kraken also lost a family member before coming to Earth-1. In the final episodes of the fifth season of "Green Arrow", when facing Captain Lance, the Black Kraken also shows a relatively soft side of her heart, because she only agreed to help Chase on the premise that Chase did not hurt Captain Reims, which also shows that The Land-2 Lance should have suffered misfortune.