According to Wikipedia,
Felix Otto Auböck is an Austrian swimmer. Felix is the current World Champion in the 400 metre freestyle short course as well as a three time Olympic Finalist, including a 4th Place finish at the 2020 Tokyo Olympics. Previously He competed in the men's 400 metre freestyle event at the 2016 Summer Olympics. In 2019, he competed in three events at the 2019 World Aquatics Championships held in Gwangju, South Korea.