'Once Upon a Time' Season 3 Spoilers: Pinocchio Cast as a Lost Boy, Show Overrun by New Characters?

It seems that ABC's hit magical drama "Once Upon a Time" has found one of its Lost Boys. Young actor Robbie Kay has been tapped to play a member of Peter Pan's Lost Boys, TV Line reported. The actor, whose previous work includes the 2008 TV miniseries "Pinocchio," will be a recurring character on the show's third season. This season, the cast will head off to Peter Pan's Neverland, in search of Emma and Neal's son Henry.

As previously reported, the show is looking to cast several new characters, including Peter Pan and the mysterious and mischievous Lost Boys leader Rufio. Kay isn't the first guest actor confirmed for the new season. Earlier this week it was confirmed that actor Giancarlo Esposito ("Revolution") would return to reprise one of his characters in one of the first episodes this fall.

While some fans may be worried about the flurry of new characters, series co-creator Adam Horowitz assured them that the show's focus will remain on the core cast. Horowitz told TVLine's Matt Webb Mitovitch, "There will be some new characters, but for the most part we're going to be focusing on our core group of regulars from Season 1 and 2. If characters do come in, it will, at least at first, be more akin to how we used Robin Hood in Season 2."

The cast of "Once" will appear in their own panel this week at the annual San Diego Comic Con. The magical show will be represented in its panel on Saturday, June 20 by co-creators and executive producers Edward Kitsis and Adam Horowitz. Cast members Ginnifer Goodwin (Mary Margaret/Snow White), Jennifer Morrison (Emma), Robert Carlyle (Mr. Gold/Rumpelstiltskin), Josh Dallas (David/Prince Charming), Emilie de Ravin (Belle), Colin O'Donoghue (Hook) and Michael Raymond James (Neal) will also be attending. There are rumors that actress Lana Parrilla, who plays Regina the Evil Queen, may also appear.

Stay tuned for more news on the upcoming season of "Once" later this week.

"Once Upon a Time" returns for season three on Sunday, September 29 at 8 p.m. on ABC.