The Sex Pistol’s Johnny Rotten was unmasked on “The Masked Singer” last night.

His real name is John Lyndon.

He has been married to his wife Nora Forster since 1979.

Nora has been diagnosed with Alzheimer's.

Lyndon has stopped performing to become her full-time caretaker.

He says he performed on the show to “bring some great joy” to her.

He hopes that his performance would entertain her.

None of the judges were able to guess him correctly.

Robin Thicke called his “School’s Out” performance the most “metal” of the show’s six-season history.