'Mr. Robot' Season 2 Spoilers: Martin Wallstrom Talks 'Ureliable' Tyrell Wellick, Teases 'Something Exciting' In Season Finale

Tyrell Wellick (Martin Wallstrom) made a few appearances in "Mr. Robot" Season 2, and they say nothing about what exactly his participation in the 9/5 hack and Elliot's (Rami Malek) grand plan. He finally appeared in episode 11, much to Elliot's shock. The fsociety founder was already clinging on to the idea that he killed Tyrell, so seeing him has made him question whether he was just making the image of the former E Corp executive up. Whether the Tyrell Elliot saw was real or not has yet to be determined, but Wallstrom is confident that his character's return -- as an illusion or the real thing -- will bring "something exciting."