The protagonist of the series and the emerging star of the Blue Planets. It was eventually determined that he is half alien hence his super-human strength, endurance and agility.
Larson was first shown as a farm boy who was extremely and inhumanly athletic ever since he was a child. He left their farm for the city after his girlfriend who was an aspiring singer left him to go with a rich man who has a nice car. Larson, distraught, wandered around the city looking to do something that would make him famous when he came across a stadium where game 1 of the Battleball series between the alien Satano Blackies and Earth's Blue Planets was in progress. Larson was quickly intrigued and after showing his superhuman strength, was admitted to the team. He would eventually become a fan favorite and the team's star player displaying superhuman prowess with the "special" pitching styles that he could come up with. Larson also had a mysterious medallion that is identical to that of the Satano Blackies reinforcement, Samson. It was later on discovered that they are actually brothers who came from a very powerful and influential family in a distant planet who were betrayed by their own people and were murdered. Only Samson and Larson survived. Larson's wish to play alongside Samson later went true when Samson turned against his former Blackies teammates and went to play for the Blue Planets in their Battleball match against the Thunder Devils.
Larson played mostly as the Blue Planets lead pitcher but would also play as short stop at some occasions.