Raider psycho-tic helmet

The  is a piece of headwear found in Fallout 3. It is found on the bodies of some raiders, and resembles a leather skull cap with goggles and handlebars jutting out of the sides of the head. As the name suggests, it resembles an exaggerated insect's head.

The Devil's Pigtails
The Devil's Pigtails are a named variant identical to the Raider Psycho-Tic Helmet, and can only be obtained through the console.

Trivia
Likely this piece of armour is an homage to the satirical cult comic, animated TV series, and short-lived live action series, The Tick. The Psycho-Tic helmet closely resembles the costume of the title character, Tick - a "nigh-invulnerable" and benignly insane superhero.