'Once Upon A Time' Season 5 Finale Spoilers: Rebecca Mader Teases Crazy Finale, 'Huge&#3

"Once Upon a Time" season 5's finale episode is almost here and it's going to be another crazy ending, says Rebecca Mader.

Mader, who plays Zelena in "Once Upon a Time" season 5, recently dished on the finale episode as well as what fans can expect for season 6.

When asked by TV Line about last episode for season 5, she replied, "Ohhhhh! [Laughs] I would say that you can't write this stuff, but then they did. The finale is pretty bonkers..."

She also dished a little bit about season 6, which is already gearing up to be an exciting season with the addition of Hank Harris and Sam Witwer to the cast as two characters related to a mental institution.

"It's an amazing set-up for next season. It's really, really huge. I can't wait until it's out and we can talk about it," she teased.

Harris' and Witwer's characters will reportedly make their "Once Upon a Time" debut in the season 5 finale and they will likely play a huge role in season 6.

The actress also gave her two cents about Baby Hood's name, which will be revealed in an upcoming episode, and said that the name is just "amazing."

"It really does. It really does, yeah. It's pretty amazing," she told the publication.

Meanwhile, Mader's character Zelena has a lot on her plate in the next episode of "Once Upon a Time," titled "Firebird." And it looks like Emma (Jennifer Morrison) and Hook's (Colin O'Donoghue) relationship will be put to the test.

"Hades [Greg Germann] turns to the heroes to ask for help with getting Zelena back from Rumplestiltskin [Robert Carlyle] and Peter Pan [Robbie Kay]," reads the official synopsis for episode 20, via Enstarz. "In return, he offers to take all their names off their tombstones. However, when Hook [Colin O'Donoghue] is still unable to leave, he and Emma [Jennifer Morrison] must journey into the depths of the Underworld. Meanwhile, Cruella De Vil [Victoria Smurfit] is determined to keep the heroes trapped in the Underworld. In flashbacks, Emma searches for answers about her family and makes an unexpected friendship."

(Source:design and trend)