Pyxis is an old man with notable wrinkles on his forehead, around and under his eyes. He is bald, has a gray mustache, and gold colored eyes. He is seen wearing a cherry-red suit with a dark blue neck tie.
Pyxis attends the first years' entrance ceremony.
Following the election for a new student council president, Pyxis is present for the candidates' final speeches.
After Titans appear and steal all of the festival food stands, Eren Jaeger tries to head to their building to retrieve his cheeseburgers, and Pyxis is among the teachers who stand in his way. Pyxis later attends a meeting with other teachers to discuss the situation subsequent to Eren's successful attempt against the principal.