"Once Upon a Time" is making a change as the series found another actor to play the role of Gaston. According to Entertainment Weekly, the role, previously played by Sage Brocklebank in season 1, will now be played by "True Blood" alum Wes Brown.

Brown will appear in a flashback episode chronicling a part of Belle's (Emilie de Ravin) life. According to E! Online, the flashback will take viewers back to the time before Belle met Rumpelstiltskin (Robert Carlyle). Back in season one, Gaston was introduced as Belle's fiancé, and though he tried to win her back from Rumpelstiltskin, Gaston was magically turned into a rose.

Meanwhile, the ABC show is set to return in March for the second half of the season, which will see the Storybrooke characters heading to the Underworld to save Hook (Colin O'Donoghue). Back in the winter finale, Hook sacrificed himself to save everyone, and through his sacrifice the Darkness was drawn out of Emma (Jennifer Morrison) and she was back to her old self again.

Last month, executive producers Adam Horowitz and Edward Kitsis were on Entertainment Weekly's The Hot Seat and answered a few questions about the Underworld storyline. In the Q&A, Horowitz and Kitsis confirmed that the characters will retain their memories while in the Underworld and that they won't be there for the whole of season 5B.

When asked if Emma and company will be able to bring Hook back, Kitsis teased, "He may die there. To be honest, he's already dead."

"He may die harder," Horowitz quipped.

The producers also revealed that some of Regina's (Lana Parilla) victims will be in the Underworld and that there is a deeper motive for Rumple wanting to become the Dark One again and this will be explored when the show returns.

Characters returning for season 5B include Cora (Barbara Hershey), Henry (Tony Perez), Peter Pan (Robbie Kay), Cruella de Vil (Victoria Smurfit) and Milah (Rachel Shelley). Greg Germann will also be joining the show as Hades.

"Once Upon a Time" returns Sunday, March 6 at 8 p.m. on ABC.