Kyle Richard Gass is an American musician, songwriter, singer, and actor best known as a member of Tenacious D, a Grammy-winning comedy band. He co-founded the bands Trainwreck and the Kyle Gass Band, with which he performs. He has acted in the films Elf and Kung Fu Panda as well as the TV shows Friends and Seinfeld.
Thomas Jacob 'Jack' Black is an American actor, comedian, singer, and songwriter. He is known for his roles in the films The Cable Guy (1996), Cradle Will Rock (1999), Orange County (2002), School of Rock (2003), Tenacious D in the Pick of Destiny (2006), The Holiday (2006), Be Kind Rewind (2008), Year One (2009), Bernie (2011), Sex Tape (2014), and The House with a Clock in Its Walls (2018). He also voices the giant panda named Po from DreamWorks Animation's Kung Fu Panda films. For his work in School of Rock and Bernie, he gained Golden Globe nominations. He was given a star on Hollywood's Walk of Fame in 2018.