League of Comic Geeks reports that voice actors Maurice Lamarche and Stana Katic have revealed roles in Warner's upcoming sequel, Batman: Arkham Asylum 2.
Speaking to Geakcastradio, LaMarche (Futurama and other animated shows) said: "Video games is hard work, I'll say that. I've only done a handful, and I'm very lucky right now, I'm about to go in and do Mr. Freeze for Arkham Asylum 2."
Unable to reveal much info, LaMarche added: "He's out for blood right now because, err... I can't tell you the situation, but he's actually somewhat a sympathetic character within the framework of the game."
Joining Mr Freeze in the highly anticipated sequel will be Talia al Ghul, the daughter of Ra al Ghul (Liam Neeson in Batman Begins).
Posting on Twitter, Stana Katic (star of ABC's buddy crime drama Castle alongside Nathan Fillion) said: "Just recorded a character voice on the next Batman video game. Never did that before."
She added: "For those who were asking: I'm voicing Talia al Ghul, the daughter of Ra al Ghul."
The tweets have since been removed, but not before they were spotted.
Batman: Arkham Asylum 2 is currently in development at Rocksteady.