Fogpaw was born as "Little" to a small clan of cats living on the outskirts of a horse farm. Born blind, he was rejected by his mother, who barely bothered to feed him. At three moons old he was still very small and struggling to get around without any help. At last, irritated at having a useless mouth to feed, the clan kicked him out, leaving him to fend for himself. He wouldn't have made it far were it not for a kittypet named Fern who lived at the horse farm. She was an indoor/outdoor cat who typically stayed far away from the small, aggressive clan. But when she stumbled across a confused and distraught kitten on his own she knew she couldn't leave him. Though she tried at first to convince him to go with her to the twolegs he was far too scared, insisting he'd be killed. Instead, he wanted to find a new home somewhere else. And so, unable to leave him, Fern agreed to help him find this new home, and the two set off together on a journey.

The journey was long and hard. Fog was still only a kitten, and underweight at that, while Fern had rarely strayed past the outskirts of the horse farm. Still, they perservered, travelling over roads and through woodlands, across streams and up hills. Along the way Fern kept Fog close by her side, trying to teach him how to navigate the world around him. She fed and protected him, and slowly he grew and became more confident. One night, while laying beneath an upturned tree's roots he told her that he hated his name, "Little." She asked if he would like a new one and he replied that he couldn't think of one. And so she suggested "Fog". When he asked why, she told him his eyes looked like morning fog. After a bit of thought, he replied that he liked it, and henceforth she called him "Fog."

Their journey lasted nearly three moons before they at last arrived in the territories. They were stopped by an Emberclan patrol and Fog hid behind Fern as she hastily explained their journey and that they were seeking a place to settle down. They were relucant to listen to her, but at last it was decided to bring them to camp to see Emberstar. He, too, was a bit reluctant to accep the strangers, but it was against the warrior code to reject a kit in need, and Fern and Fog were a package deal. And so, they were allowed to stay.

Their first moon in camp the two were under close watch and mostly remained together, sleeping in their own corner of camp. Fog hardly spoke to anyone but Fern during this time. The only exception was the medicine cat Blossomspring, who frequently checked in on them to make sure they were recovering well from their journey. Though he only spoke to her a few times, and only briefly, she was the only one he didn't hide from. At last, after a moon, they were given freedom to fully join the clan and Emberstar announced that Fog was to take on the name Fogpaw and begin warrior training. However, he interrupted to say he would rather train under Blossomspring. Though surprised, she accepted his request, and henceforth he became the Emberclan medicine cat apprentice. Though he's still struggling to warm up to the clan as a whole, he greatly appreciates all that they have done for him by taking him in and he sees this as a way that he can give back and help them in return. Now he splits his time between running around the medicine den helping Blossom and visiting Fern in the queens den, where she's made herself home.