"Crisis On Infinite Earths" already promises to be the Arrowverse's most ambitious crossover yet. Not only will it encompass characters from Arrow, The Flash, Supergirl, DC's Legends of Tomorrow, Black Lightning and Batwoman, it will also feature the return of multiple Supermen and Lois Lanes in Tyler Hoechlin, Tom Welling, Elizabeth Tulloch and Erica Durance.

With so many characters involved, there are bound to be plenty of fun interactions onscreen, some expected and others less so. In fact, with shooting underway, we now have a tease at a crossover between two characters that comes as quite a surprise.

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On Twitter, an image from the Vancouver set of the "Crisis on Infinite Earths" shoot reveals Lois Lane will appear alongside Batwoman.

For the time being, it's unclear whether the Lois involved in the scene will be Tulloch or Durance. Either way, this is a surely two characters most fans didn't necessarily expect to cross paths in the Arrowverse.

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"Crisis on Infinite Earths" begins Sunday, Dec. 8 at 8 p.m. ET/PT on Supergirl, then continues in Batwoman on Monday, Dec. 9 at 8 p.m. ET/PT and in The Flash on Tuesday, Dec. 10 at 8 p.m. ET/PT. After the winter hiatus, the crossover will conclude on Tuesday, Jan. 14 in Arrow at 8 p.m. ET/PT and in DC's Legends of Tomorrow at 9 p.m. ET/PT.