As soon as Brandon Routh joined The CW's DC Universe as Ray Palmer, fans wondered how often we would hear Superman Returns jokes.
Turns out, not too often. There were some throwaway gags in The Flash episode "All-Star Team-Up," but that's about it.
During the final part of the network's four-show, three-night Invasion! crossover, Ray noted that Kara Danvers -- Supergirl -- looked just like his cousin.
The joke is pretty on-the-nose, but producers assure you it was just that: a joke. Ray's cousin isn't going to be the Earth-1 doppelganger of Kara Zor-El or anything.
"in respect to the cousin line, basically, it's sort of like when we did last year on Legends, we did the prison break and I said to the writers, 'If we don't make a Prison Break joke here with Wentworth, we're not doing our jobs,'" executive producer Marc Guggenheim said. "If we have Brandon and Melissa share the screen and we don't make some sort of joke like that, we're not doing our jobs. The truth is, that joke existed on Arrow originally. Then, a certain scene got cut so I moved it over to Legends. I just kept moving it back and forth. I'm like, 'I'm getting it in one of these episodes.'"
Arrow, The Flash, and Supergirl will cross over with DC's Legends of Tomorrow this week in "Invasion!" a three-part crossover that starts in the final moments of an episode of Supergirl and then plays through the other series. Based on the 1988 comic book event miniseries Invasion! from Keith Giffen, Bill Mantlo, Todd McFarlane, Bart Sears, and the crossover -- with its marketing title "Heroes vs. Aliens" -- will closely track the plot of that storyline: aliens will be assembled by The Dominators and descend on Earth to bring an end to the "threat" of Earth's burgeoning metahuman community.
In the comics, the Dominion were secretly hoping to build their own super-race, and as a result created a handful of new superheroes in the course of the story.
NEXT: The Flash, Arrow, Supergirl, Legends of Tomorrow Crossover Trailer / First Look At The Dominators / Invasion! Crossover Promo Photos / Potential The Flash Spoiler Spotted On Set / Will Joe West Die During The Invasion! Crossover? / Enter To Win An Ultra-Rare Invasion! Crossover T-Shirt
Supergirl airs Mondays at 8 p.m. ET/PT; The Flash on Tuesdays at the same time; Arrowon Wednesdays and DC's Legends of Tomorrow on Thursdays. All four series air on The CW. The "Invasion!" crossover will air beginning November 28.