Techno Viking is an internet phenomenon or meme based on a video from the 2000 technoparade in Berlin, Germany.
The camera is on a group of dancing people with a blue-haired woman in front. A man stumbles into the scene grabbing the woman. A bare-chested man (known colloquially as the Techno Viking) wearing a Mjölnir pendant enters the scene while turning to that man.
He grabs him by the arms and the camera follows, showing the confrontation. The bare-chested man pushes the guy back in the direction he came. He looks at him sternly and then points his finger at him, ensuring he behaves.
Then the camera follows the bare-chested man as the techno parade continues. Another observer comes from the back of the scene offering an inverted bottle of water to him. As the situation calms down, the bare-chested man starts to dance down Rosenthaler Straßeto techno music.
Watch the Imitations below.