Mr. Robot season 4 will premiere sometime in 2018 on USA.
The Mr. Robot season 3 finale featured a post-credits scene that reintroduced a familiar character from season 1, but you’ll be forgiven for not immediately knowing who it was.
As it turns out, the man who approaches Darlene and the prostitute outside Elliot’s building is Fernando Vera (Elliot Villar).
Elliot hacked the prison where Vera was being held, causing a riot that allowed him and several other inmates to escape.