Daniel Dominik Kaiser-Küblböck (born Küblböck; 27 August 1985 – 9 September 2018) was a German singer. He placed third in the television talent show Deutschland sucht den Superstar in 2003. In September 2018, he went missing at sea off Canada while travelling on a cruise ship. He was declared dead on 10 March 2021. Shortly before the disappearance, Küblböck stated he wanted to assume a female identity and began using the name Lana Kaiser.