Leizel is a little tall for her age, coming in just under 5'. She has dark blonde hair down to her shoulder blades and wide blue/grey eyes, along with quite fair skin that has never managed to tan in her life.

Leizel is a little shy when meeting people, and definitely enjoys her own space. However, when you catch her in the right moment, it can be hard to get her to stop talking. She has always been quite good at school, in her Muggle school at least, and is excited to learn about this world that is so new to her.

Leizel grew up with her parents and two brothers in the town of Llanelli in Carmarthenshire, Wales. She is close with her parents and has always had a positive relationship with her brothers as well. Her older brother, Owen, is 13 and is jealous that she gets to experience the magical world. He wishes he had magic and this has lead to some awkwardness between him and Leizel, but he is trying not to let it come between them. Meanwhile, her younger brother, Evan, is 8 and is now constantly on the lookout for anything that might indicate he has magic too.

Leizel was a little bit of a late bloomer when it comes to magic. Her first instance of magic, as far as she and anybody else knows, happened while she was doing a homework sheet, a little after her 10th birthday. She had been tapping her pencil on the table as she was thinking about how to answer something and, when she let go of her pencil for a moment, instead of dropping to the table it continued tapping by itself. She was extremely confused and screamed when she saw it. When her mother came running, she was just in time to witness it for a couple of seconds before it dropped. After that, Leizel and her family started noticing odd occurrences more often in quiet moments like that, or when she experienced a big emotion.