Intern: A male student who is very mischievous and picks fights with those around him, but he's a good friend. His grades are mediocre. Secretary: A male student. He has a bit of a playful side. He is a deep thinker, wears glasses, and excels in his studies. Paramedic: A male student. He loves cola way too much and is quite close with the Intern. He wears a mask. He must drink at least one cup of cola a day and gets angry if anyone touches his drink. His grades are average, and he is playful. Nurse: A female student. She is a bit mischievous. She is energetic and gets along well with the Intern and the Secretary. She is a decent student. Psychologist: A male student. He has a calm personality, rarely gets angry, and is quite kind. He wears glasses. (The beard setting was removed, so he is clean-shaven.) He is a top student. Doctor: A male student. He has a bit of a playful side. He usually acts calm but has a short temper. He is very smart. His dream is to become a doctor, but since he hasn't obtained a license yet, he is nicknamed the "Unlicensed Doctor." Security Guard: A male student. You can just call him Security. He is playful. Whenever a fight breaks out, he goes to break it up. His grades are okay. Head Nurse: She is calm and quiet. She is a top student. She is female. Secret Agent: A male student. He is sensitive and cold-hearted. He has a small playful side. He is quite good at his studies. He is close with Security. Surgeon: He is an academic genius. He wears glasses and is smarter than the Doctor. He is male and actually holds a medical license. Ratty: A male mouse. He has a younger sister. He is a decent student. His level of playfulness varies, making him very quick-witted. Ratina: A female student. She was subjected to experiments in the past but returned thanks to Ratty's help. She is smart, energetic, and quick-witted. Barney: A male student. He loves coffee so much that he drinks it every day. He is playful and his grades are average. He used to bully his friends in the past, but he has calmed down now thanks to the coffee. Ron from Accounting: A male student. You can just call him Ron. He is composed and a bit playful. He wears glasses and is an absolute genius. He always carries a bag full of papers, which are all his personal notes. Liz: A female student. She is mischievous and loves taking photos. Her grades are average. Sam: He cleans a lot and even owns a cleaning machine. He is playful and a bit sensitive.