Stephen Laurel "tWitch" Boss was an American freestyle hip hop dancer, choreographer, actor, television producer, and television personality. In 2008, he finished in second place on the American version of So You Think You Can Dance (SYTYCD).

From 2014 to May 2022, he was featured on The Ellen DeGeneres Show as a repeated guest host and he was also a co-executive producer of the program. He was featured in Ellen's Game of Games as a sidekick to DeGeneres. Between 2018 and 2020, he and his wife, Allison Holker, hosted Disney's Fairy Tale Weddings on Freeform and Disney+.

In 2003, Boss was a semifinalist on MTV's The Wade Robson Project and a runner-up on the television talent competition Star Search. He choreographed routines for South Korean pop/R&B singer Seven and helped train other YG Entertainment artists including Big Bang. In 2007, he was an uncredited "flamboyant dancer" in Blades of Glory and a Maybelle's Store Dancer in Hairspray.

After competing in So You Think You Can Dance, he taught dancing at South County Classical Ballet with fellow finalist Katee Shean. On April 30, 2013, he and Allison Holker performed a dance routine on Dancing with the Stars. They danced to "Crystallize" which was performed live by Lindsey Stirling.

Beginning on April 1, 2014, Boss was featured on The Ellen DeGeneres Show as a guest DJ. In October 2014, he announced that he had been cast in Magic Mike XXL. On August 17, 2020, he became a co-executive producer of Ellen DeGeneres' daytime talk show.

Boss was cast as Marcel X in the superhero movie Perfectus and later he had a feature role in the movie Ushers. He was a member of the dance troupes Breed OCLA and Chill Factor Crew.

On December 10, 2013, Boss and fellow SYTYCD alum Allison Holker married at Nigel Lythgoe's Villa San Juliette Vineyard and Winery in Paso Robles, California. He also adopted Holker's daughter. Their son was born in March 2016, and their daughter was born in November 2019.

On December 13, 2022, Boss was found dead in Encino, Los Angeles. His death was ruled suicide by self inflicted gunshot wound to the head. He was 40 years old.

Source.