Legends of Tomorrow has often interpreted members of the ever-growing slate of Arrowverse characters in new, unique ways. In the show's run, fans have been treated to an ominous message from an older Barry Allen (Grant Gustin), as well as Stephen Amell's portrayal of 'Old Man' Oliver Queen.

And now, it sounds like viewers will be treated to yet another unique interpretation of an Arrowverse character on Legends of Tomorrow. As one of the show's executive producers, Marc Guggenheim, revealed on Entertainment Weekly Radio's Superhero Insider, this special appearance will occur in the sixteenth episode of Legends' sophomore season.

“In the penultimate episode we’re gonna have - I can’t be specific about this, but it’s one of the most fun things I think we’ve ever done on the show - a character from one of the other shows on Legends in a way that you’ve never seen before." While Guggenheim is remaining silent on who this mystery appearance will be, he hinted that the version of the character you see on Legends might be a one-off appearance. "You may never see [that version of the character] again. But [it] will, I think, just send fans into squeals of joy.”

This tease might leave fans with way more questions than answers, much like the equally mysterious unveiling of Rex Tyler/Hourman in Legends' season one finale. There is a chance that this interpretation of the character could be from an alternate timeline, much like Old Man Oliver was in the episode 'Star City 2046.' While the Legends have spent the season chasing after time abberations, they by no means have fully mastered the art of time travel, and could end up sending the Waverider into a new timeline.