Rider Strong and Ben Savage Rider Strong and Ben Savage

I hope you've been practicing your Feeny calls, because you're going to have some serious competition when Girl Meets World returns for its second season in 2015.

Will Friedle, who played Cory's older brother Eric Matthews on Boy Meets World—he also goes by Plays With Squirrels—will finally make his long-awaited appearance on the Disney show. The writers and Friedle both confirmed the news Wednesday via Twitter. Naturally, the episode featuring his return is titled "Girl Meets Mr. Squirrels."

But Eric's return isn't the only big news to come out of the Girl Meets World camp. In addition to Eric, both Shawn Hunter (Rider Strong) and Mr. Feeny (William Daniels) will also be back in a big way. "Shawn, Eric and Mr. Feeny will be an important part of season 2," the writers revealed. "Lives will change. People will grow. People won't."

2014 Fall TV Report Card: How's the new class doing?

If you don't want to wait for Season 2 to see Cory and Shawn back together, you're in luck! Strong will reprise his role as Cory's BFF in Dec. 5's Holiday-themed episode, which also welcomes back Cory's (Ben Savage) parents, played by Betsy Randle and William Russ.

As if all of that wasn't enough to digest, the writers also promised that another original cast member will appear in Season 2, but they weren't willing to give up a name just yet. 

Who do you think the mystery guest star will be? Is it Angela? Jack? Morgan? Hit the comments with your own suggestions!

On the Set! Flash and Arrow stars reveal secrets from the two-night crossover: