Elizabeth "Bitsie" Tulloch starred on the NBC fantasy drama for six seasons.

The CW has found its Lois Lane.

Grimm favorite Elizabeth "Bitsie" Tulloch has been tapped to take on the iconic role in the network's annual Arrow-verse crossover event. Additionally, Cassandra Jean Amell has joined in the role of Nora Fries, Mr. Freeze's wife. (Mr. Freeze, who has not yet been featured in the Arrow-verse, will not appear.)

Tulloch joins Tyler Hoechlin, who will reprise his role as Superman, in the three-night, three-show crossover set for December.

"We couldn't be more excited to introduce Lois Lane to the Arrow-verse. This dogged, determined and brave reporter will make for a strong partner to Superman and amazing addition to our universe of DC characters," Supergirl executive producers Jessica Queller and Robert Rovner said in a statement in August when the network began its casting search for Lois Lane.

Tulloch spent six seasons as the female lead on NBC fantasy drama Grimm. Her credits include House and The West Wing. She's repped by ICM Partners, Luber Roklin and Stone Genow.

Tulloch joins a long list of actresses who have played Lois Lane, including Margot Kidder, Teri Hatcher, Amy Adams, Kate Bosworth, Noel Neill, Phyllis Coates, Erica Durance, Megan Fox, Uma Thurman, Dana Delany, Mandy Moore, Stana Katic and Pauley Perrette.

For her part, Amell — the wife of Arrow star Stephen Amell — started her entertainment career on America's Next Top Model. Her guest star credits include The CW's One Tree Hill and Hart of Dixie as well as Mad Men. She and Amell partner in production company Well Fed Artist Productions. She's repped by Smith & Hervey/Grimes Talent Agency, Elevate Entertainment and Canada's Play Management.

The crossover, which will introduce Batwoman — played by Ruby Rose — starts Sunday, Dec. 9, with The Flash at 8 p.m. ET/PT, followed by Arrow on Dec. 10 at 8 p.m. and concluding Dec. 11 at the same time with Supergirl.