Myer is the son of Benjamin Morales, a Puerto Rican wizard, and Nicholas Sawyer, a British muggle. He was born in Liverpool in his own house three weeks earlier than expected. Nonetheless, he grew up healthy and happy with his two dads. Benji taught Myer about his wizard ancestry and was excited to know that he came from a long line of loud-mouthed wizards from his father's line. At 9 years old Myer was expelled for setting a boy's backpack on fire, although none of the teachers saw him lighting a match or a lighter. He insisted it was an accident and that he didn't mean to do so, but nobody believed him.

His hair is an ashy brown and he has white skin which features odd tan lines from previous trips to the beach or family vacations to Puerto Rico. Just like Charles, he has wide brown eyes and a thin upper lip. Myer is fluent in both Spanish and English, something he's very known to flaunt. Sometimes he mixes both languages when talking too fast or when he's angry.

He's known to be very loud and stubborn but he will put his foot down if the situation requires it. He has quick reflexes and will not hesitate to hex you if you've hurt him or his friends. Myer dislikes being with a large group of people, it makes him insecure and nervous since he doesn't know what to say or do. But he'll try playing it off.

He's always wanted to fit in, which is a major weakness he doesn't want to fix. He's spineless and sometimes acts as a doormat when someone insults him very harshly or makes comments about his parents or friends.