Kind Classmates:

1. Reina: kind-hearted person who tries to defend Tsuna when she sees him being bullied

2. Siera: twin of Sho; doesn't bully Tsuna because she is too busy playing games

3. Sho: twin of Siera; same reason

4. Michael: Don't care about anything but basketball; don't bully anyone

5. Akira: Loves reading books; protects Tsuna from time to time if he's in range

6. Thomas: Foreigner who hates bullies; practices self-defense; helps tsuna from time to time but trust his friends to protect him most of the time

Bad Classmates (bullies):

1. Miyu: An arrogant girl who tries to become the most popular girl by doing random things like bullying the hated student and all but can't beat Kyoko. 

2. Ayame: Friend of Miyu who bullies Tsuna because she has nothing better to do

3. Ayumi: She can't swallow the fact that Tsuna hangs out with her crush – Gokudera

4. Erika: Bitter that Tsuna is still able to have friends while being himself when she needs to act just to be liked 

5. Sara: Bullies Tsuna because she hates weaklings as it reminds her of who she was before

6. Ichika: Bullies Tsuna because her sister forces her (Sara)

7. Kaida: Bullies for fun; thinks she's a princess because she was spoiled

8: Mie: Raised as a person who looks down on others

9: Noa: Tsuna accidentally embarrassed her when she was young by tripping over her; since then, she took revenge by bullying him

10: Sada: No good reason; just cruel 

11. Sayuwa: Hates Kyoko for being popular. She bullies Tsuna because she thinks that it will hurt Kyoko as they are friends

12. Taki: hates Tsuna for stealing Gokudera and Yamamoto's attention

13. Yuri: same as Taki

14: Okemia: wants to have a perfect harem but Tsuna is always stealing the attention of the Vongola guardians which irks her

15. Kiro: heir of the famiglia of Akuro

2. Hideo: servant of Kiro who is tasked to protect him as they are near Vongola

3. Isao: likes Kyoko and jealous of Tsuna who is friends with her

4. Kendrick: also likes Kyoko

5. Rei: bully Tsuna because he wants to be 'in'

6. Ren: bully Tsuna because he finds him annoying

7. Kaito: bully Tsuna because if he doesn't, he'll be targeted because he is also stupid and clumsy

8. Hiro: same reason as Kaito

9. Xander: Foreigner who bullies Tsuna in order to not be targeted because of his accent

10. Takao: pressured by classmates to bully Tsuna

11. Yori: annoyed at how Tsuna always stutters

12. Yuji: often a victim of Tsuna's clumsiness so he takes revenge by being mean to him

Vongola students:

1. Tsuna

2. Yamamoto

3. Gokudera

4. Kyoko

5. Hana

6. Chrome

7. Emma

8. Shitopi

Total: 40 students

Girls: 20

Boys: 20