Wolf Ackva (1911-2000) was a German voice actor known for his patriarchal, authoritative voice, put to use dubbing Sam the Eagle on Die Muppet Show and in related productions, through the German dub of Muppets Tonight.
Ackva began his career as a writer and subsequently studied medicine before entering the acting profession. He became active in German film and television from 1937 onward. He played Sherlock Holmes in a 1955 TV version of The Hound of the Baskervilles and was a regular on the crime series Die seltsamen Methoden des Franz Josef Wanninger (as Kriminaloberinspektor Steiner). In the 1970s French co-production of The Count of Monte Cristo, he played prison official turned philanthropist Boville.
As a voice actor, Ackva was heard in the James Bond franchise, dubbing actors Bernard Lee and Robert Brown as M in a total of seven films, and Geoffrey Keen in For Your Eyes Only. He also dubbed Gregory Peck in three films, Henry Fonda in Mister Roberts, Vincent Price in Theater of Blood, James Mason in Duffy, Edward Asner in The Doomsday Flight, and Richard Attenborough in the Kenneth Branagh Hamlet, in addition to narrating several films. His animation credits include Theoden in Ralph Bakshi's 1978 animated version of The Lord of the Rings and several aliens on the animated Star Trek.