Mattias grew up in a small suburb of Stockholm, Sweden, then moved to Gothenburg to study architecture and earn an MFA in graphic design at HDK School of Design and Crafts. He has had various career as a freelance illustrator, children's book author, animator and video game designer. He now lives in one of Sweden's oldest towns, the thousand-year-old Sigtuna.
To see more of his work, visit www.mattiasa.blogspot.com. He has a lot of ink and watercolour sketches on site.
Source: An Illustrated Life