Mutated Mister Dan was known to be an Teacher within the Paper School, a cosmology and astronomy Teacher. But after the Virus known as L-125 spread around multiple continents, and people getting infected, Mister Dan got infected after Miss Bloomie got mutated to stage 3 infected, which lead to him being torn apart in two by her. Mister Dan stands over 20 feet tall and is also stage 3 infected, having multiple limbs and crawls around the school, with his arms, he acts more of an animal beast.