Black Lightning isn't technically a part of the Arrowverse, but that won't stop the character from taking part in the upcoming "Crisis on Infinite Earths" crossover special.

Cress Williams, who plays Black Lightning on the show, just revealed his favorite scene from the crossover. The scene in question involved him working with The Flash's Grant Gustin.

While speaking to reporters about "Crisis," Williams talked more about the scene with Gustin and what made it so special to him.

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"What stands out to me -- and I think, just because it was totally different -- was honestly a scene, I can't tell you about anything, but, a scene that I did in Vancouver," Williams began. "That was a lot of fun. I think I can say it was with Grant....But, it was, you're working with a new person, and a new environment...and, Grant and I, behind the scenes, discovered that we have a lot of the same sensibilities, when it comes to the work. And they wrote a scene that was really just a good person-to-person scene. It went by so fast, but, it was really fun to do."

Williams and Gustin were also the subject of a recent behind-the-scenes photo that saw them dressed up as their respective characters.

"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.

Airing Mondays at 9 pm ET on The CW, Black Lightning stars Cress Williams as Jefferson Pierce/Black Lightning, China Anne McClain as Jennifer Pierce, Nafessa Williams as Anissa Pierce/Thunder, Christine Adams as Lynn Stewart, Marvin "Krondon" Jones III as Tobias Whale, Damon Gupton as Billy Henderson and James Remar as Peter Gambi.

KEEP READING: Black Lightning Cress Williams Explains How He Leaked Crisis Announcement