Brick is a severely autistic boy who has a lot of problems. He cries when he gets hit no matter how soft it is. He crawls like a baby while crying because he wants to get picked up. He cries when he's all alone. Cries when he makes an accident on himself. And cries when someone doesn't give him treats. His big head is the most problematic. If even the slightest hit gets on his head, the pain becomes unbearable suddenly and Brick will begin to cry and scream in agony. He also hates being alone or become separated. If someone begins to make distance, he will cry and scream and will crawl to their direction with tears and snot on his face. Chi usually has to put him to shape by making him change his diaper on his own and yells at him for crying over the smallest things. Because of this, Chi and Bricks relationship began to grow. Brick is even able to walk but walks like a toddler. It was still something.