Warning: This post contains spoilers for 3 Body Problem. Less than seven episodes into 3 Body Problem, Will Downing is already dead. At least in the sense that his body is no longer living. His brain, however, still has a long journey ahead of it. Played by Alex Sharp (The Trial of the Chicago 7, To the Bone), Will may not immediately stand out as the most interesting or essential member of the tight-knit group of scientists dubbed the Oxford Five—Will, Jin Cheng (Jess Hong), Saul Durand (Jovan Adepo), Auggie Salazar (Eiza González), and Jack Rooney (John Bradley).