War for the Planet of the ApesEdit
Boyle was at the base camp with Red and Winter while they waited to reconnect with Colonel McCullough. He signaled at Winter to bring him some stew and with some encouragement from Red, Winter approached Boyle nervously. Winter filled Boyle's bowl with stew from a bucket, but accidentally spilled some on Boyle's boot, enraging him. Boyle kicked the bucket out of Winter's hand and pulled a gun on him when he started to snarl at Boyle. A fellow soldier named Preacher tried to calm Boyle down, but Boyle called him a "donkey-lover" in anger and Preacher sat back down. Boyle then angrily told Winter to get him a new bowl.
At the main base, When Percy accidentally drops a log, Boyle becomes enraged at Percy. Boyle then turns his anger toward Red, angrily telling him to teach that "stupid monkey" a lesson he won't ever forget by whipping him repeatedly.
While out on patrol on the tower, Boyle was hit in the back with mud thrown at him by the apes. Enraged, he climbs down to open the gate and demands to know which ape it was at gunpoint. Just as Boyle asks if it was Stone, more mud is thrown at him and Boyle sees Rocket holding the mud in his hands. Boyle prepares to shoot Rocket in revenge before he is pulled down the tunnel the apes were digging by Maurice, killing him.
Boyle was described as a very volatile soldier under the best of circumstances. He would go off on apes when they spilt or throw something at him and pull out his gun. Boyle was ruthless and had a volatile temper even against his fellow troops when they tried to calm him.