Percy Jackson is a stubborn person. In chapter 4, page 49, Percy is being attacked by a minotaur—a bull-headed man. His mother tells him to run to the property line on his own, which the minotaur cannot cross, meaning he will be safe there. However, Percy refuses to leave on his own and insists on taking Grover and his mother with him.
“That’s the property line,” my mom said. “Get over that hill and you’ll see a big farmhouse down in the valley. Run and don’t look back. Yell for help. Don’t stop until you reach the door.”
“Mom, you’re coming too.”
Her face was pale, her eyes as sad as when she looked at the ocean.
“No!” I shouted. “You are coming with me. Help me carry Grover.”… “He doesn’t want us,” my mother told me. “He wants you. Besides, I can’t cross the property line.”
“We don’t have time, Percy. Go. Please.”
I got mad, then—mad at my mother, at Grover the goat, at the thing with horns that was lumbering toward us slowly and deliberately like, like a bull.
I climbed across Grover and pushed the door open into the rain. “We’re going together. Come on, Mom.”
“I told you—”
“Mom! I am not leaving you. Help me with Grover.”
Percy’s mom explained to him why she’s not going, and it’s for his own good, but he still won’t change his mind. He loves his mom a lot and wants to stay with her, however, going on his own would’ve been better. After all, the minotaur is after Percy, not Grover or his mom. Later, his stubbornness causes his mother’s death.
Percy is also short-tempered, loyal, and emotionally driven. In chapter 1, page 3, he sees his friend, Grover, get bullied by Nancy Bobofit. He immediately felt rage build up inside of him and wanted to protect Grover.
“I’m going to kill her,” I mumbled.
Grover tried to calm me down. “It’s okay. I like peanut butter.” He dodged another piece of Nancy’s lunch.
“That’s it.” I started to get up, but Grover pulled me back to my seat.
“You’re already on probation,” he reminded me. “You know who’ll get blamed if anything happens.” Looking back on it, I wish I’d decked Nancy Bobofit right then and there. In-school suspension would’ve been nothing compared to the mess I was about to get myself into.
Percy is loyal to his friend and he wants to protect him. However, he is on probation because he is too emotionally driven and short tempered—every time something he doesn’t like happens, he gets angry and wants to fight. “In-school suspension would’ve been nothing compared to the mess I was about to get myself into.” This foreshadows that he did end up losing his temper and get in trouble.