Sirov (known as Zirov in the animated series) is a Syldavian criminal conspiracy who appears in King Ottokar's Sceptre in The Adventures of Tintin series. He got a phone call from Captain Wizskitotz and had his orders along with Zlop to stop Tintin from reaching Klow. They hid in the boulders and he and Zlop aims their guns at the carriage-man and starts interrogating him. They heard a car and finally realized that Tintin was in the car.

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