Mass Effect 3's next single player downloadable content will be an expansion called "Leviathan," as outed a voice actor playing a major role in the DLC. The actor, Anthony Skordi, who's also done voice work for games like Diablo III, God of War III and Dungeon Siege III, told Eurogamer he's voicing a rogue Reaper named Leviathan in the yet-to-be-announced expansion.

Word of this Leviathan DLC pack first surfaced with the launch of ME3's Extended Cut DLC, which contained some partial scripts for Leviathan when it launched a few weeks back, according to data mined by, well, people who have the time and skill to do that sort of stuff.

The add-on will be set right before ME3's ending and will offer some more insight on the origin of the series' main baddies, the Reapers. And we're sure to hear more about the DLC during BioWare's panel this coming Saturday at San Diego Comic-Con.