Who was the "Monster" in the first series in the British version of "The Masked Singer"?

The first series of the British version of The Masked Singer premiered on ITV on 4 January 2020, and concluded on 15 February 2020. The season was won by singer Nicola Roberts as "Queen Bee", with comedian Jason Manford finishing second as "Hedgehog", and singer Katherine Jenkins placing third as "Octopus".

The singer CeeLo Green as "Monster" finished fourth. Throughout the competition he performed "Happy" by Pharrell Williams, "Can't Help Falling in Love" by Elvis Presley, "Don't Cha" by The Pussycat Dolls, "Human" by Rag'n'Bone Man, "Do You Really Want to Hurt Me" by Culture Club and "Careless Whisper" by George Michael.

Thomas DeCarlo Callaway (born May 30, 1975), better known by his stage name CeeLo Green (or Cee Lo Green), is an American singer, rapper, record producer, and businessman. He is known for his work in soul music, including the hit singles "Crazy" and "Fuck You".

Born in Atlanta, Georgia, Green came to initial prominence as a member of the Southern hip hop group Goodie Mob. He subsequently began a solo career, releasing two albums on Arista Records: "Cee-Lo Green and His Perfect Imperfections" (2002) and "Cee-Lo Green... Is the Soul Machine" (2004).