Foreman Pig

Grandpa 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 Grandpa Pig appears as the main enemy of Theme 2-21. Following the defeat of the first Grandpa Pig, they are more commonly seen.These however,might be the only pig who has the most bumps when hit by blue bird ,wood ,ice ,and weak stone.

Grandpa Pig Bosses
Main Article: Achievements

There have been 5 Grandpa Pig bosses : Mr Mustache (At the end of second world in Poached Eggs ) Mounting Mustache (At the end of second world in Danger Above ) Mason Mustache (At the end of second world in Big Setup ) Clint Eastbacon (At the end of second world in Ham 'em High ) and Cave Conqueror(Finish World 16).

Trivia

 * Grandpa 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. In the Google Chrome Version, they have brown eyebrows and they stick their tongue out when they are hurt (They share the tongue-sticking characteristic with the King Pig ).
 * Grandpa Pig are shaped differently than all other pigs in the game.
 * In the Cinematic Trailer, a Grandpa Pig is seen cooking eggs on a frying pan without cracking them open, suggesting that the pigs don't know how to cook, despite their greed for eggs.
 * When the pigs win a level, Grandpa Pigs don't smile. Instead, they close their eyes.
 * In Hogs and Kisses, it falls in love with a Female Pig in the credits.
 * The Grandpa Pig will smile when the player loses a level in the Chrome version.
 * The grandpa pig will have a bump on his head when hit
 * In the credits for Mooncake Festival, the Grandpa Pig has his Google Chrome design.