
He attended Archbishop Molloy High School and served as a peer tutor, homeless shelter volunteer, and National Honor Society member. William Morrissey was born in the Glendale neighborhood of New York City's Queens borough on August 16, 1986.

After leaving WWE, he resumed teaming with Amore (now known as nZo) on the independent circuit before joining Impact Wrestling in 2021, and AEW in 2022. He was later moved to the SmackDown brand, where he had a brief feud with Daniel Bryan, before being released by the company in June 2018. He was brought up to Raw alongside Amore the day after WrestleMania 32. Together, they won the NXT Year-End Award for Tag Team of the Year in 2015.

In WWE, he came to prominence for his partnership with Enzo Amore, whom he teamed with from 2013 to 2017. He is also known for his tenures with WWE (where he performed under the ring names Colin Cassady and Big Cass), and Impact Wrestling (where he performed as W. He currently performs in All Elite Wrestling (AEW) under the ring name Big Bill, where he is a member of the Mogul Embassy stable. William Morrissey (born August 16, 1986) is an American professional wrestler.
