Luke Fox (a.k.a. Batwing), Sophie Moore, and Mary Hamilton have been cast for the CW's Batwoman, according to Deadline.
Luke Cage's Camrus Johnson will play Luke Fox, the son of Wayne Enterprises' R&D director Lucius Fox. As the younger Fox, Johnson will reportedly "keep Wayne Tower secure in his boss's absence." His boss being Bruce Wayne (Batman), whom in the "Elseworlds" crossover was revealed to be missing. In comic books, Fox goes on to become Batwing.
Teen Wolf's Meagan Tandy will reportedly play Kate Kane's one-time military colleague and lover Sophie Moore, who is now "a high-level private security agent and one of Gotham’s staunchest protectors."
You's Nicole Kang is reported to be playing Kate Kane's step-sister, Mary Hamilton. That character is described as "excitable, talkative, and an influencer-in-the-making" and Kane's polar opposite.
A Batwoman pilot is being filmed for consideration as a fall 2019 series on the CW.