English actor who played the 32nd-century courier Cleveland Booker, Michael Burnham's partner, in Star Trek: Discovery.
David Ajala is an English actor whose credits include the prison drama Starred Up, the Syfy series Nightflyers and the role of Manchester Black on Supergirl.
He joined Star Trek: Discovery in its third season as Cleveland Booker, a Kwejian courier who meets Michael Burnham in That Hope Is You, Part 1 and becomes her partner and an ally of the Discovery crew. Book remained a main character through the fifth and final season, with the destruction of his homeworld in the fourth season driving one of his most dramatic arcs.