Kristen Schaal and Holland Taylor join the cast of Bill & Ted 3 (2024)

Orion Pictures announced Thursday that Kristen Schaal and Holland Taylor have joined the growing cast of Bill & Ted Face the Music, which hits US theaters August 21, 2020.

The 41-year-old Emmy nominee - best known for Bob's Burgers and The Last Man on Earth - confirmed the casting news by tweeting: 'Party on my sweet dudes!'

Kristen - who worked with Keanu Reeves in Toy Story 4 - will play a messenger from the future who warns his Wyld Stallyns character Ted Logan and Bill Preston (Alex Winter) to create a life-saving song, according to THR.

And the 76-year-old Emmy winner - best known for her May-December romance with Sarah Paulson - takes on the part of the most powerful person in the universe, The Great Leader, according to Deadline.

Holland was last seen as Julianne Moore's mother in Gloria Bell and she'll return as Detective Hodge's (Brendan Gleeson) next-door-neighbor Ida Silver in the Audience Network series Mr. Mercedes on September 10.

Winter and Reeves - now 53 and 54 - began reprising their titular roles as time- traveling metalhead slackers-turned-dads from San Dimas in the three-quel on July 1 in New Orleans.

'Basically, they're supposed to write a song to save the world, and they haven't done that,' the John Wick action star told The Graham Norton Show in 2017.

'The pressure of having to save the world, their marriages are falling apart, their kids are kind of mad at them, and then someone comes from the future and tells them if they don't write the song it's just not the world, it's the universe. So they have to save the universe because time is breaking apart.'

Bill & Ted co-creator and screenwriter Ed Solomon shared an on-set snap Monday of 'incredible' SNL star Beck Bennett having a 'killer first day' as Ted's younger brother Deacon Logan.

Returning OG castmembers will include William Sadler as Death, Amy Stoch as Missy, and Hal Landon Jr. as Ted's father and police chief Chet Logan.

SMILF star Samara Weaving and Atypical actress Brigette Lundy-Paine play Bill & Ted's teenage daughters Thea Preston and Billie Logan.

The growing ensemble of new faces include Jayma Mays, Erinn Hayes, Anthony Carrigan, Jillian Bell, Scott 'Kid Cudi' Mescudi, and Anthony Carrigan.

Director Dean Parisot (RED 2, Galaxy Quest) helms the third installment produced by Oscar-winning director Steven Soderbergh.

The first two installments of the franchise - Bill & Ted's Excellent Adventure in 1989 and Bill & Ted's Bogus Journey in 1991 - amassed a total $78.5M at the global box office.