Before I tell you all the harem, I have Should I add characters from the One punch man universe to the story and if yes note some of the heroes will be your friend and instead of being y/n the hero hunter you decide to go into Master Bang steps and become a hero but after a while you be a vigilante any harem.
Hazbin hotel
1. Charlie
2. Vaggie
3. Fem Angel dust
4. Fem Alastor
5. Fem Husker
6. Nifty
7.Cherrie bomb
8. Velvette
9. Carmilla Carmine
10. Odette
11. Clara
12. Emily
13. Rosie
14. Fem Lucifer
Helluva boss
1. Fem Blitz
2. Fem Moxxie
3. Millie
4. Loona
5. Fem Stolas
6.Octavia
7. Stella she will be nicer and less a bitch.
8. Verosika Mayday
9. Coco
10. Apple
11. Kiki
12. Milky
13. Fem Fizzaroli
14. Fem Asmodeus
15. Fem Vortex
16. Beelzebub
17. Sallie May
18. Lin
19. Mary Mayberry
Ok that is all I can think of tell me if you got any others I can suggest.
See you later and stay safe.