Karl Viktorovich Pauker (January 1893, in Lviv - 14 August 1937, in Moscow) was an NKVD officer and head of Joseph Stalin's personal security until his arrest and execution.
Pauker was born into Jewish family in Lviv, which was then part of Austria-Hungary. Prior to the war he was a hairdresser working in the Budapest Opera
Pauker joined the Cheka and became Stalin's bodyguard in 1924. Pauker took an active part in the purges, including the executions of Grigory Zinoviev and Lev Kamenev.
He was dismissed in April 1937, according to Simon Sebag Montefiore, because he "knew too much and lived too well". He was arrested and executed quietly without trial in August 1937 and was not posthumously rehabilitated.