TVGuide.com has confirmed that Anders will definitely be appearing in an upcoming episode of Season 5, which premiered this past Sunday to take us on our first trip to Camelot.
Anders' return follows the announcement that both Meghan Ory and Jamie Chung will be back as Red/Ruby and Mulan, respectively. Though, while the two of them will appear in more than once episode, Whale is only expected in a single hour, so far.
We last saw Dr. Whale at the end of Once Upon a Time's third season, when he delivered baby Neal. He is currently a series regular on iZombie.
Are you excited about Dr. Whale's return? What do you think he'll be doing this year? What other Once characters would you like to see come back?
Video: Once Upon a Time cast choose their characters' ultimate happy endings