ForOnce Upon a Times 100th episode, the series heroes and villains are going to hell.

Hades is such a fun, endlessly creative challenge, Germann says of hisflame-licked fiend.

They strike the perfect balance between keeping things grounded and letting things fly sometimes literally.

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Credit: Disney

Though chances are slim that everyone will make it out alive,OUATviewers know to have hope.

If you go back and look, we were the No.

1 show to be canceled, according to critics, Kitsis says.

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ABC

We got accused of being too hopeful.

Looks like hope won out.

Once Upon a Timereturns Sunday, March 6 at 8 p.m.