Comic book fans are very used to hearing publishers push a familiar message after any major "event" story: That it'll have lasting repercussions on its respective fictional universe going forward. Given how clearly comic book-derived The CW's DC Comics-based superhero shows are, it's no surprise that a similar message is being delivered following this past week's "Invasion!" crossover between "Supergirl," "The Flash," "Arrow" and "DC's Legends of Tomorrow" -- and helpfully, executive producers Marc Guggenheim and Andrew Kreisberg have outlined exactly how "Invasion!" will affect the short-term future of each show.

For "The Flash," Kreisberg explained, it'll be more of an emotional impact, now that the rift between Barry (Grant Gustin) and Cisco (Carlos Valdes) has been mended as a result of the events of the crossover.

"Based on episode 7 of 'Flash,' Cisco and Barry were probably at their lowest point, because Cisco learns that [his brother] Dante died [as a result of Barry manipulating the timestream and causing the 'Flashpoint' timeline]," Kreisberg, an executive producer on all four of The CW's DC-based shows, told press including CBR during a Q&A this past week at The CW's Burbank headquarters. "Their friendship has been renewed through the course of these episodes. When we come back in episode 9, Team Flash is in a really good place, and strong again, which they need to be, because they're going to confront Savitar in episode 9."

"Supergirl" -- which operates on an entirely different Earth than the other three shows, partly stemming from its origins on a different network (CBS) in its first season -- will be the least affected of the four, according to Kriesberg.

"As far as 'Supergirl' is concerned, it doesn't really have that big an impact, because she's the one who brought the light," Kreisberg said. "It was really Barry and Oliver who had to go on a journey, and she brought the charm, and the fun, and the kick-assness. She just continues on in her way."

"Arrow" had a unique role in "Invasion," since the "Arrow" installment of the crossover was also the show's 100th episode. Thus, the hour focused both on moving the larger story forward, while also paying tribute to the history of the show that spawned the Arrowverse back in 2012; something that was achieved via a shared hallucination induced by The Dominators, the alien race that served as the "Invasion!" antagonists (and also were the bad guys at the center of DC Comics' 1988-1989 "Invasion!" storyline that served as inspiration for the TV crossover). In the episode, Oliver (Stephen Amell) and other "Arrow" characters past and present see a glimpse of a peaceful, speculative world where he never became the Green Arrow, though he ultimately chooses to return to reality and his ongoing quest.

"Going into 509, which is the 'Arrow' midseason finale, you'll see that Oliver sort of has a new sense of purpose," Guggenheim, an executive producer on "Arrow" and "Legends of Tomorrow," told reporters. "The events of 508 essentially forced him to emotionally double-down on his mission. He goes into 509 with a new sense of purpose, and a reaffirmation of his bond with Thea, because they chose each other in 508. That carries through the midseason finale, and obviously sets up things beyond it."

"Legends of Tomorrow" saw a major reveal during "Invasion!" when main character Professor Martin Stein (Victor Garber) discovered that he now has an adult daughter named Lily, played by Christina Brucato, as a result of time travel.

"In terms of 'Legends,' I think the two big takeaways are, obviously, Stein's daughter -- we haven't seen the last of her, you'll see her again in a few episodes -- as well as, Ray's got his suit back," Guggenheim said. "He's very, very happy to be a superhero again."

While "Supergirl" won't see another new episode until the new year, the midseason finales of "The Flash," "Arrow" and "DC's Legends of Tomorrow" are all slated to air next week.