Although he has snow-white fur, it is thin and shows his pink skin underneath, a common trait for seacats. He has a teal main and tail tuft,
along with sea-blue stripes under his eyes, on his tail, and his forearms. He wears an old pare of toeless shoes, baggy pants held up with a belt, and a loose shirt that looks more like a large scarf.
He started working as a peddler after his mother and younger sister died of a sickness and they needed money to buy medicine so his younger brother wouldn't go either. Still working, he goes in and out of the village seasonally to trade and to come back before the winter covered the road to the village with snow and ice. This seasonal trading leads to struggles to keep fed while he was gone, and making he got back in time to stock up for winter, not helped by the fact his father does the same, leaving Desmond to fend for himself in the time they are gone.
Mewry enjoys the sea and dense forests, feeling uncomfortable in the heat and in open fields. He has trouble telling time and often misses the opening to buy goods before it snows, often resulting in harsh reprimands from his angry father. He wishes to leave his village and move to Hoshiruki when his younger brother starts working, to try and make a name for himself. Although wanting this he fears for his family. Because his village is poor, medicine does not come by often and when it does its too expensive to buy, leading to the sickness that killed half his family and nearly his younger brother. He doesn't want the same to happen again and believes a bigger city such as Hoshiruki could have the support they need to live longer lives.
Despite his struggles, Mewry is a happy guy who takes his time enjoying nature, but easily loses his temper towards people. This has lead to him being banned from many taverns in the towns he visits most. His unstable temperament has gotten him in trouble even within his own village and his own father, whom he has gotten into a physical fight with more than once.