Mark Hamill has officially called it a day on the Joker voice which is a role that he’s made his own for near on two decades. For people of a particular age / interest in Batman, his Joker voice is pretty much the definitive characterisation for the Clown Prince of Crime, first appearing in the Batman: The Animated Series and then through a number of different other animated movies and also video games. As such, the last appearance of Hamill as Joker is in Batman: Arkham City.
(He might be enticed back at some point, but for now it looks like the end of his association with this role.)
Which leaves Sony Online Entertainment with a bit of an issue as DC Universe Online goes free-to-play (on November 1). Hamill did the Joker’s voice there as well.
If SOE wants to do future Joker content for DCUO – and he is one of the Big Three villain-side, so you’d think at some point they will – they are going to have to find voice over talent to do an impression of Hamill’s Joker. Impressions rarely work out well since they can easily end up sounding a bit off and players will be quick to pick up any issues.
This is an issue with voice overs. They do add to a game, but they also add a lot of complications to MMOs that plan (and need) to expand their content over time.