Boulder is a light gray version of Terence, and is a member of the Custom Angry Birds. He has light gray plumage, a dark gray belly, spots and eyebrows. Boulder is rough, speechless, and intimidating. Boulder has not spoken a word in his life and was born in a mountain full of rocks until General found him and recruited him. Boulder is as hard as a rock, and only can move by rolling or teleporting. Like the other Terence models, he wrecks things more lethally.
Known Aliases: Rocky (everyone keeps wanting to call him that), Rock Bird, Light Gray Big Brother Bird
Anger Level: Testy
What makes him angry: Potentially people calling him Rocky, and pigs
Powers: Potentially killing his targets with his immense rock body
Hobbies: Staring contests and camouflaging in rock piles
Best friends: Terence, General, Joe, and David
Favorite Holiday: Pirate Bash