Joining Williams (Into the Woods), who stars in ABC's "666 Park Avenue," at Comic-Con are stage and screen actors Michael C. Hall (Cabaret, Chicago) and Jennifer Carpenter (The Crucible) from "Dexter"; Jonny Lee Miller (After Miss Julie) and Lucy Liu (God of Carnage) from "Elementary"; James Roday (Extinction) and Dulé Hill (Stick Fly) from "Psych"; Orlando Jones (The Wiz at Encores!) from "Black Dynamite"; Alan Tudyk (Spamalot, Prelude to a Kiss) from "Firefly"; Jennifer Morrison (The Miracle Worker) from "Once Upon a Time"; Michael Emerson (Hedda Gabler) from "Person of Interest"; Giancarlo Esposito (Cat on a Hot Tin Roof) from "Revolution"; and Anna Paquin (The Glory of Living), Christopher Meloni (Ireland Gate Theatre's A View From the Bridge) and Rutina Wesley (The Submission) from "True Blood," among others.

At the 2012 convention, cast members from the hit Fox series "Glee" will be part of a panel discussion, which is scheduled to take place in the Indigo Room July 14 beginning at 6 PM PT. The hour-long discussion will be moderated by TVLine.com’s Michael Ausiello.

Panelists will include "Glee" stars Lea Michele, Cory Monteith, Darren Criss, Kevin McHale, Jenna Ushkowitz and Naya Rivera as well as co-creator/executive producer Brad Falchuk.

"The fans at Comic-Con were among the first to really get behind our show, and we've had such a great time returning there every summer," said Falchuk in a previous statement. "This was the first year our cast has not gone out on tour, so Ryan [Murphy] and I thought we'd let them have some well-deserved time off. But everyone wanted to be there, and we couldn't be happier to report that 'Glee' is returning to the convention where we feel it all started."

For more information visit Comic-Con.org.