Alexander Ken Hermansson, born January 22, 1992, in Brännkyrka, Stockholm, is a Swedish YouTube and TV personality. He is a member of the extreme sports and entertainment group Rackartygarna, which has a YouTube channel with approximately 97 million total views as of 2025. Hermansson is also known for hosting the Swedish children's program "Sommarlov" on SVT.

In the summer of 2014, he co-hosted "Sommarlov" alongside Malin Olsson and Rijal Mbamba. He continued hosting the show in subsequent years, returning every summer from 2015 to 2023. In spring 2015, Hermansson participated in TV4's "Let's Dance" and finished in fourth place.

Hermansson began making his own films at the age of twelve using his webcam, where he played various roles in the same film by changing costumes. His friends also participated in these webcam sketches. He attended Mediagymnasiet, specializing in film, TV, and photography. In 2010, he co-founded Rackartygarna with his classmates.

Hermansson is also involved in the global Christian movement Hillsong Church.

He married Caroline Hermansson in April 2016, who is also a children's program host. They have a son, born in 2020. In March 2022, they announced their separation via Instagram. Hermansson is the grandson of Jan Hermansson, a pioneer in the martial art of Aikido.