VIDEO: John Stamos Talks Guest Starring in ABC's GALAVANT

ET recently spoke with GALAVANT guest star John Stamos as he donned his armor for ABC's upcoming musical comedy. Stamos describes his character as "somewhere between Richard Burton and Dick Van Dyke and Mary Poppins." Watch the interview below!

Stamos will appear in the episode titled "Joust Friends," in which GALAVANT enters a jousting tournament against a boastful rival, Sir Jean Hamm (Stamos), to test his return to heroic form (and win some much-needed traveling money and a really nice rooster). But it quickly becomes clear that GALAVANT is a long shot to win. Meanwhile, King Richard asks Gareth to help him become a bit more macho so that Madalena won't despise him quite so much.

Screenwriter/executive producer Dan Fogelman ("Crazy, Stupid, Love," "Tangled," "Cars") unites with Broadway and Hollywood award-winning musical team-composer Alan Menken ("The Little Mermaid," "Aladdin," "Beauty and the Beast") and lyricist Glenn Slater ("The Little Mermaid," "Tangled") for a highly-anticipated comedy extravaganza.

GALAVANT stars Joshua Sasse as Galavant, Timothy Omundson as King Richard, Vinnie Jones as Gareth, Mallory Jansen as Madalena, Karen David as Isabella and Luke Youngblood as Sid.

Once upon a time, the dashing hero, GALAVANT (Joshua Sasse), lost the love of his life, Madalena (Mallory Jansen), to the evil King Richard (Timothy Omundson). Now, our fallen hero is ready to take revenge and restore his "happily ever after." But it won't be without a few twists and turns along the way.

GALAVANT will premiere on Sunday, January 4 (8:00-9:00 p.m., ET) with two 30 minute episodes, back-to-back on the ABC Television Network.

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