'Once Upon a Time' Season 5 Spoilers: Hades of the Underwold

New details about the return of "Once Upon a Time" have been revealed.

The previous episode of "Once Upon a Time" season 5 revealed that the characters of Storybrooke will soon be exploring the Underworld. With the introduction of a new environment, new characters are expected to join the series.

The executive producers of the series, Adam Horowitz and Edward Kitsis, recently shared some details about the upcoming episodes. They explained that the rest of the season will see the return of several characters. One of the characters mentioned is Cora, who will be leading the group around the Underworld.

In addition to the return of previous characters, it was revealed that a new face will be introduced to the series. It was reported that Hades will be the new character for the upcoming episodes. Hades will be played by Greg Germann, best known for his role in the series "Ally McBeal."

According to Entertainment Weekly, Horowitz gave some details about Hades. He stated, "We're going to be meeting the Once Upon a Time version of Hades in the second half of the season. While he is both inspired by a myth and by the Disney movie version, as we like to do, we're trying to create our own Once Upon a Time spin. We can't wait for everyone to see what [Germann] does with the character."

As Hades is expected to bring trouble to the group, it was revealed that Emma will be faced with more problems. The executive producers explained that there is a chance that she will not be able to bring Hook back to life.

Emma had planned to ressurect Hook by giving him half of her heart, like what her parents did for each other. However, there is a chance that her plan will fall through. This will surely upset fans of the couple.

"Once Upon a Time" season 5 is expexted to return on Mar. 6.