A lesser performer would turn Harge into a monochrome villain, but Chandler recognizes the truth in Carol's assertion, “we're not ugly people”. He shows us a man acting out of hurt, and feeling the shame.
Silently intense as ever, Del Toro's threatening presence draws out long and slowly like blade. His underacting is easily more unnerving than villainous grandstanding could ever be.
Vulgar as it is to try and single anybody out of Spotlight's perfect ensemble, Keaton earns my vote with his subtle embodiment of guilt and remorse. A lesson in actorly reserve from a brilliant veteran.
Dry and impossibly calm under pressure, Rylance's turn as a spy being tried for just doing his job is also quietly humanistic, finding emotional grace notes and underplaying them expertly.
Who could have guessed that Stallone's seventh outing as the iconic Balboa would yield the most textured performance of his career, exuding a lifetime of wisdom and regret through internalized swagger.
Other strong considerations:
John Cena in Trainwreck
Emory Cohen in Brooklyn
Brendan Gleeson in Suffragette
Oscar Isaac in Ex Machina
Liev Schreiber in Spotlight