Bostick appeared in the episode "The Tale of the Twisted Claw". He was portrayed by Jason Tremblay.
Not very much is known about him. He attends the exact same schools as Kevin and his friend Dougie
Freeman do. It would seem, that he has known them since Elementary School. This is because, Kevin has stated that he has always wanted to be a better athlete than him.
During, Junior High School, he became a very popular student and talented athlete. He had the support of the student body, in hopes he would win the school field day's 600 marathon run. However, Kevin saw to it that he would lose. Kevin used the evil power of the twisted claw. In which Kevin made a wish to beat him in the 600 run; at any cost!
Then during the field day run, He did a wonderful job. He was running faster than the rest of the team. All of his friends and peers from the side kept on cheering him and giving him their support. In fact, he was in the lead. Then just as was coming up to the finish line, Kevin began to catch up with him.
Then finally, just before he reached the finish line, a black German shepherd appeared! It came out from trees from out of nowhere. Also, nobody else seemed to be able to see it, except for Dougie. The German shepherd quickly went running by. It came just as he was about to cross the finish line. Then he tripped and fell on the ground. He landed hard on his knee, tumbling in circles. Then by default, Kevin won the race and received the medal instead of him.
Then the gym teacher, his teammates and all of his friends and peers came over to check on him. Also Kevin and Dougie did too. He was in excruciating pain, clutching his sore leg. The gym teacher said he might have a broken his leg. So an ambulance was called for him.
Then sometime later on, Kevin and Dougie made their final wish. In order to save Dougie's parents, they wished for all their wishes to reversed, as if none of them had ever happened. Then after this was done, He was fully healed. This was because time was altered. So he won the field day race, like he was destined to all along. So he never tripped over a German Shepherd who came running by on the field.
- Jason Tremblay also portayed Denny Crocker in "The Tale of the Phantom Cab".