The Walking Dead” adds a new villain and “Marvel’s Daredevil” and “Once Upon a Time” bring back some old favorites in this casting roundup …

“24” and “Salem” alum Xander Berkeley has joined season 6 of “The Walking Dead” as someone so secretive AMC won’t release his character’s name. Despite being described as a character who has a huge ego and who is deeply focused on self-preservation, TV Line reports that Berkeley is not playing Negan, the villain from the “Dead” comics.

Scott Glenn (“Silence of the Lambs,” “Training Day,” “The Bourne Ultimatum”) is back for more of “Marvel’s Daredevil,” reprising his role of the mysterious and sardonic Stick for three episodes in season 2 of the Netflix series.

Jamie Chung will be reprising her role of Mulan in the upcoming season of ABC’s “Once Upon a Time,” according to E! Online. No word on what this means for her relationship with Aurora (Sarah Bolger).