Gugulethu Sophia Mbatha

Does she like playing little sisters?
Gugu Mbatha-Raw first came to the attention of American genre audiences as Martha Jones' (fellow Femme Fantastique Freema Agyeman) younger sibling Tish on Doctor Who.
And, when JJ Abrams cast his series UnderCovers, Gugu auditioned for the role of Samantha Bloom's kid sister Lizzy!
Apparently, Abrams thought "Kid sister? The hell with that! She's the LEAD!"
Wise man, that JJ!
She was the best thing about the show!  ;-)
Besides doing a lot of genre tv and movies (see below), this graduate of the acclaimed Royal Academy of Dramatic Arts performed to rave reviews both on the London stage and Broadway including Cleopatra in Antony and Cleopatra, Juliet in Romeo and Juliet, and Ophelia in Hamlet (which went from the West End to Broadway)!
A Fantastic Femme to watch, which we can now do in the new movie A Wrinkle in Time!

Genre credits include...
Cloverfield III: God Particle
A Wrinkle in Time (Dr Kate Murry)
Beauty and the Beast  [2017] (Plumette)
Black Mirror "San Junipero" (Kelly Booth)
Jupiter Ascending (Famulus)
Touch (Clea Hopkins)
Odd Thomas (Viola)

UnderCovers (Samantha Bloom)

BoneKickers (Viv Davis)

Bad Girls (Fidelity Saunders)

Trial Retribution (Jenny Miller)

Disarming Britain: FallOut (Shanice Roberts)

Doctor Who (Letitia "Tish" Jones)

Spooks aka MI-5 (Jenny)

Check out...
Gugu Mbatha-Raw (FanSite)
Adoring Gugu (FanSite)
Profile at RADA (via Wayback Machine)
Profile on the Undercovers page at NBC