Corporal Pig

Helmet Pig is a Medium Pig that wears a stone helmet for stronger defense. It is the third strongest pig variety in the game, and serves as the chief enemy in the first set of levels in each theme. It also serves as a protector to King Pig. Helmet Pigs are very much alike to Mustache Pigs in game ways, not actual looks. They have bosses: Herr Helmet, Hovering Helmet, Hardhat Hidalgo, Billy the Pig, and Cave Explorer. The Helmet Pig first appears in Poached Eggs Theme 1-21.

Trivia

 * Helmet Pig and Postman Pig are the only pigs that don't display their ears.
 * Along with the other Pigs, the design for Helmet Pigs have changed in the Angry Birds Chrome Beta. They have shinier helmets with buckles on them.
 * In the Chrome version, the Helmet Pig's helmet may be made of metal, as the helmets are shiny and can be dented.
 * The Helmet Pig plush is the only Pig that is all beat up and in its corpse.
 * The helmet the Helmet Pig is wearing resembles a Nazi German helmet used during World War II.
 * In new animations, like Wreck the Halls and Ham 'o' Ween, the belts can be seen wrapped around the Helmets of the Helmet Pigs
 * As shown in the Ham 'o' Ween and Wreck the Halls animations, the Helmet Pigs hold giant butter-knives and forks. It is possible that these giant pieces of silverware and kitchen utensils are weapons of choice for the Helmet Pigs in the animations.
 * The Helmet Pig also holds chopsticks in the Year of the Dragon animation. It's a possibility that it is a weapon of choice for the helmet Pigs in China because the helmet Pig used them to make the audience of Bad Piggies applause during the puppet show.
 * In the Year of the Dragon animation, the Helmet of the Helmet Pig is different. It has a different shape, gold bearing at the bottom, no buckle, and a feather on top of the helmet.
 * One of the Helmet Pigs appears as a teacher in the "Meet the Pink Bird" animation. He reveals in his plan written on his chalk board that after he gives King Pig the eggs, King Pig gives him a medal for succeeding his plan.
 * His zompig form  looks like the skull of a Bad Piggie.

Strategy

 * One shouldn't overestimate the power of the Helmet Pig's helmet. Even though the helmet is stone, it is weak. Red can defeat a Helmet Pig in just one hit.
 * Using a Blue Bird also works, but one should make sure to split the bird before making contact.
 * Any bird can kill the Helmet Pig.
 * Wood that falls on him can kill him, but it requires more wood. Stone structures that fall on him can kill him instantly. One block that shouldn't be used is ice. Ice is weak and will not work on Helmet Pigs.