Hundreds of Disneyland employees who perform in parades, high-five visitors and pose for photos while dressed as famous Disney characters—from Darth Vader to Princess Jasmine—have backed the creation of a new unit of the Actors’ Equity Association, a union that primarily represents theater actors and stage managers.

Disneyland’s Mickey, Minnie, Goofy, and Pluto argue that they’re underpaid and deal with a harrowing work environment. Now, they’re trying to unionize.

More than two-thirds of roughly 1,700 eligible workers signed the petition to seek an election through the National Labor Relations Board, and a vote will likely be held in May or June.