Pigs are the characters that show in the Bad Piggies game, and also the antagonists in the Angry Birds franchise.
The minion pigs are the dominant pigs of the game, but however not the main protagonists. They appear only on the cutscenes, but also on the feed the king minigame.
There are 3 different sizes of the pig: small, medium, and large.
Freckled Pig is the main antagonist of the game. It's freckles make it distinguishable from the minion pigs. It is able to build various vehicles and drive them as well, along with mechanic pig and king pig.
King Pig, as the name says, is the King of the pigs. He is very gluttonous (meaning greedily eats food) and bossy. He also often joins freckles on driving to his destination.
Mechanic Pig is a friend of Freckled Pig, who helps him create the needed vehicles for the trip.
In the game, he is more of a power-up; the Mighty Eagle's counterpart. He will build the player the needed vehicle, but will not drive the self-made vehicle, thus the vehicle itself will not be effective unless the player uses it wisely and timely. It's Super counterpart - The super mechanic pig - creates more than one vehicle, each one for each star.
Chef Pig is the chef of King Pig. Like the minion pigs, he only appears on the cutscenes and the Feed The King Pig mini-game.