Liam O'Brien has spent the last couple decades working steadily on stage and in the game and animation industry.
As an actor, he has worked on well over 400 video game and animation projects. Some of the more well known series he has lent his voice to include Star Wars Rebels, Transformers: Robots in Disguise, Avengers Assemble, Wolverine and the X-Men, Planet Hulk, Phineas & Ferb, The Regular Show, Sofia the First, GI Joe, Hulk and the Agents of Smash, Iron Man and Hulk: Heroes United, and Naruto.
On the video game end, popular titles include Shadow of Mordor, World of Warcraft, The Last of Us, The Order: 1886, Titanfall, Wildstar, Elder Scrolls Online, Final Fantasy XIII, Asura's Wrath, Darksiders, Starcraft, Call of Duty, Resident Evil, and Dragon Age.
In addition to his long list of acting roles, Liam has also spent an ample amount of time outside the booth, both as voice director and writer. The Last of Us, The Witness, Evolve, Shadow of Mordor, LEGO Dimensions, World of Warcraft, and Resident Evil 6 are some of the many projects he has directed on.
You can also find him every Thursday on Critical Role, where a group of nerdy-ass voice actors play D&D for an audience of millions.