LOS ANGELES - Glenn Quinn, who played the visionary half-demon doyle on the first season of WB's "Angel" has died. Quinn, 32, died Tuesday (Dec 3.) of unknown causes. Further details were unavailable at presstime.

Prior to "Angel" Quinn, who was born in Ireland, has a recurring role on the ABC's sitcom "Roseanne" as the boyfriend, and then husband, of Roseanne's daughter Becky (played by Lecy Goranson and Sarah Chalke at various times during the show's run).

He also appeared in several feature films, most recent the independent movie "RSVP", which played at several film festivals this year. Quinn appeared in the first nine episodes of "Angel" in 1999, playing a hald-human, half-demon, whose visions of people in distress directed Angel's (David Boreanaz) investigations into the demon underworld of Los Angeles.

In his last appearance, Doyle sacrifices his life for the greater good, passing on his visions to Cordelia (Charisma Carpenter). At the time, "Angel" co-creater Joss Whedo said Doyle's death was planned from the start of the series. He was replaced by Wesley Wyndham-Price (Alexis Denisof), a character who, like Angel and Cordelia, originated in Whedon's "Buffy the Vampire Slayer".

A spokesperson for Mutant Enemy, Whedon's production compagny, expressed condolences to Quinn's family.