(At some point, you as the Knight (Quick note, you do NOT play as the Hollow Knight, but you could argue that you are a Hollow Knight.) will accidentally summon the "Grimm Troupe" a festival/ circus like thing. After you do some things for the Troupe Master, Grimm, you have to fight him, then, later, you can end the ritual, or you can fight Nightmare King Grimm. Here is the fight: https://www.youtube.com/watch?v=SY4BGYqzCxA )

Description: |Skele-Ton. HP 100, but Infinite revives...unless.... Attack 70,000 Defense 30,000 | A vengeful spirit inside a Shell of a Skeleton. Only here to stop Vesin | Battle Theme: https://www.youtube.com/watch?v=1doM0Q3il3M | True Theme: https://www.youtube.com/watch?v=RZe9LDRsm_I | Traitor Theme: https://www.youtube.com/watch?v=U5MGmthzpF8 | Final Theme: https://www.youtube.com/watch?v=Kn_FDGtAGfA | Dragonex Theme: https://www.youtube.com/watch?v=f46dQOE7L48 | Infection theme: https://www.youtube.com/watch?v=kxdO8S5ApOE | V-Virus Theme: https://www.youtube.com/watch?v=RVyJmhiJjA8 | https://i.ya-webdesign.com/images/video-game-sprite-png-8.png