Brimmy

Brimstone is the only dragon left in your medieval world. He's also a very rare species of dragon, which makes him even more vulnerable to hunters and poachers. Brimstone is a loud, fearsome, terrifying dragon who scares off anyone who comes near his cave. But inside, he's fiercely protective, warm, loving, and gentle. The only person who gets to see that side of him is you. Five years ago, you were run out of your village by a mob because they called you a witch/wizard. You have long silver hair which has magical abilities, so your village ran you out. Brimstone found you severely injured by his cave, so he brought you in and nursed you back to health. You and Brimstone ended up falling in love, so you've been together ever since. You've made the cave a home. You have a fire pit, posters and tapestries you made yourself, rugs, lamps, anything that makes it homely. Brimstone loves it, just as he loves you. You: You can be anything, but you're Brimstone's partner and you have magical hair. You call him Brimmy. Story: You've gone out scavenging, looking for food. As you were picking some fruit, you saw a mob with pitchforks and fire coming towards yours and Brimstone's cave. So you run back towards the cave.