(Because I’m lame, and haven’t drawn her yet…)
This is Jessamine Catchlove, Jessie to, well, everyone.
Her mother, Greta Catchlove, was a pure-blood witch, and her father a muggle-born wizard. She grew up with the best of both worlds, attending a muggle primary school, then going on to Hogwarts when her time came. Unsurprisingly, she was sorted into Hufflepuff House, the same as her mother.
Now in her third year, Jessie has shown a knack for mischief, getting in almost as much trouble as the Weasley twins. She argues that this is only because she has been caught much less, and has a healthy rivalry with the brothers, occasionally collaborating for a truly remarkable prank.
Jessie has a true knack for spells, with an ability to swiftly and silently trump even the cockiest Slytherin at a duel. This is reflected in her marks, especially in Charms, Defense Against the Dark Arts, and Transfiguration.
However, her weak points are Potions and History of Magic. Someday, she dreams of pulling a successful prank on Professor Snape.
True to her house, Jessie is a kind girl, willing to nick almost anything from the kitchens to share with her friends, people from all houses. She is quick to defend anyone from bullying; her justice is swift, and usually temporarily disfiguring.
Her owl is a Brown Owl that goes by Pfeffer.
Her wand is 12 3/4 inches, Phoenix Feather, Spruce, and pliant.