The Bowling pins were a bunch of bowling pins who wanted to escape the bowling alley since they were tired of being knocked down. Pig tried to help them, but the night manager tried to inform Pig that they had no feelings. They then sent 11 pins to attack the night manager. They failed, but thanked Pig for his efforts.
Pig was so far the only character to not attempt to bowl them down.
Rat didn't even care that the bowling pins had feelings.
The Workers at the Bowling Alley
The workers didn't even know (or care) that the bowling pins have feelings.
Tony was one of the bowling pins. He led the attack on the night manager.
He informed the other pins of Tony's pending attack on the night manager.