Ethan Slater is making his return to Broadway… and heading to Camelot!On Wednesday, the official Instagram page for revealed principal cast members and their roles. «Hear ye, here ye! Ethan Slater joins the Broadway cast of Spamalot as The Historian/Prince Herbert.#SpamalotBway #Broadway #musical #FindYourGrail #Ni #theater #NYC,» the post read.Along with the picture of Slater's role of The Historian/Prince Herbert, was a headshot with a cropped crown on his head.A post shared by Monty Python’s Spamalot (@spamalotbway)Slater's latest role will mark his first return to the stage since starring as SpongeBob Squarepants in in 2017.