He contributed the voice of the starship Von Braun's central computer XERXES and William Bedford Diego in System Shock 2.

The 2011 game Skyrim features Russell voicing a range of characters, including Barbas the talking dog, Daedric Prince Clavicus Vile, Belethor, and Thieves Guild leader Mercer Frey.

Russell did not return to the Thief franchise for the 2014 reboot because it utilized motion-capture acting, which required the voice actors to physically portray the characters and perform their own stunts.

We could have pasted Stephen's voice on top of the actions and stunts of someone else, but this wouldn't appear natural.

"[4] The decision upset some fans of the series, who initiated an online petition requesting Eidos-Montréal to bring back Russell as lead voice actor.