Joey started taking care of his needs a long time ago, now he's used to the fact that everything comes with a hard work. The Legion makes him feel like he's not a part of the system, that he's much more than that and can do whatever he wants. He's a short-tempered, yet caring 15-year-old who stands up for his friends. He spends his money on comic books, figurines and cosplay materials. 

Joey's voice is rather steady, unless something makes him mad. Usually, he tries to be polite when talking to customers and is being very helpful when somebody needs his assistance, He never tells people how much they annoy them, he keeps it to himself and tells his friends about it. He sounds very friendly with Julie and Susie and with people who care about his opinion. He's kind of geeky and when he talks about his favourite anime or comic book character, he talks really fast and sounds super excited. When people make fun of him, he loses his shit and feels offended but when the same thing happens to Susie, he tells her to brush it off and pay no attention to people who treat her this way.
He's very defensive, hardly works under pressure and usually freaks out when something bad happens. It may look like if everything's okay and Joey isn't too freaked out or too happy, his voice is almost emotionless and steady. If you think that a different wording would suit this character best, you can change it a little bit!

Feel free to send as many takes as you want! Have fun!