Grelinek is the captain of team Shenkuu, playing as a forward. She has speed and skill, but occasionally lacks the power to slam the Yooyuball into the goal. She has duties at the Lunar Temple. In the run up to ACXI, she started having dreams about her holding the Cup on the winner's podium. In 2018, there were rumours she had problems with Larcy Phu. Mirsha has a girlfriend named Ginia who is the team's head coach.