The Season 6 premiere of The Flash saw The Monitor drop by STAR Labs to tell Barry that “The Flash must die” for the multiverse to survive, which raised the question of whether the Arrow-verse would kill off both Barry Allen and Arrow’s Oliver Queen.
After the events of “A Flash of the Lightning,” the bigger question is: could the Arrow-verse kill Barry instead of Oliver Queen as Green Arrow?
Although the Arrow-verse’s “Crisis on Infinite Earths” mega crossover is still nearly two months away from premiering on The CW, The Flash has already taken big steps toward setting up the arrival of The Anti-Monitor to potentially destroy the multiverse.