Johannes was born in Greenland to parents Susanne and Tom Ostermann. He is the youngest of six siblings.
Recently, he graduated from high school and is excitedly looking towards his future. His next goal is to study law next year in Nuuk, Greenland.
Johannes loves reading books, going to the gym, weightlifting, and running. He has been the lead dancer at the Qiayuk Dance Studio and is trilingual.