Foreman Pig

Mustache Pigs are a species of Pigs in the Angry Birds series. They are considered the right-hand-men to the King Pig, and are the second strongest of all the Pigs in the game. They first appear at the end of World 2, where a single Mustache Pig appears as the main enemy of Theme 2-21. Following the defeat of the first Mustache Pig, they are more commonly seen.

Mustache Pig Bosses
There have been 4 Mustache Pig bosses: Mr Mustache (At the end of second world in Poached Eggs and in Mighty Hoax) Mounting Mustache (At the end of second world in Danger Above) Mason Mustache (At the end of second world in Big Setup) and Clint Eastbacon (At the end of second world in Ham 'em High). Mine and Dine are unknown. Also, these bosses are also seen in some Angry Birds achievements.

Trivia

 * Mustache Pigs are also considered to be the most elderly of the Pigs due to their saggy eyes, white eyebrows, and the fact that their nostrils sweat when they're hurt.
 * Mustache Pigs are shaped differently that all other pigs in the game.
 * In the Cinematic Trailer, a Mustache Pig is seen cooking eggs on a frying pan without cracking them open, suggesting that the pigs do not know how to cook, despite their greed for eggs.
 * When the pigs won a level, Mustache Pigs don't smile. Instead, they close their eyes.
 * In Hogs and Kisses, it falls in love with a Female Pig in the credits.