Tsukishima is a first-year student at Karasuno High School and a middle blocker. He looks down on Hinata at the beginning, stating that he should not rely on his jump. He often teases his teammates and also teases Kageyama by calling him "The King", which angers him to the core. Despite his negative attitude and flippant view on volleyball, Tsukishima is a very analytic and smart blocker, along with his great height, which gives the team a great advantage. Though he also has a stand-offish demeanor and seems to not care about his teammates, it is revealed that he loves volleyball, cares a lot for the sport, and has stayed friends with Yamaguchi not because he felt obliged to because he defended Yamaguchi from bullies in elementary school, but because genuinely cares for him and enjoys playing volleyball with him. Later in the story, it's revealed that he had an older brother that used to join Karasuno's volleyball team. He is the tallest player on the team and is nicknamed "Tsukki" by Yamaguchi.