Once Upon a Time‘s upcoming sixth season may be full of “untold stories,” but the cast and creators had plenty to tell during the ABC drama’s San Diego Comic-Con panel on Saturday.

Casting calls for Once Upon a Time spinoff pilot centered on Alice in Wonderland.

Just in time for April Fools' Day, we've got at the cast of Once Upon a Time foolin' around on set. Watch hilarious bloopers with stars Ginnifer Goodwin, Josh Dallas, Lana Parilla, Robert Carlyle, and Rebecca Mader.

Once Upon a Time returns this Sunday in a big way, and আপনি know what that means – Yahoo is in on all the fun!