returned for the fourth week of season 9 on Wednesday, and the show celebrated all things good and decent with a comic book-themed episode: «DC Superheroes Night.»Helmed by host Nick Cannon and overseen by stalwart panelists Robin Thicke, Ken Jeong, Jenny McCarthy and Nicole Scherzinger, Wednesday's episode saw three new contestants — The Gargoyle, The Wolf and The Squirrel — duke it out musically for their shot at moving on in the competition.So who went home and who moved on? Each week, ET will be breaking down the biggest moments and most surprising unmaskings in each new episode of the hit reality singing competition series.