In Hollow Knight: Silksong , not every threat stands directly in Hornet’s path. The Skull Tyrant is the first truly optional boss in a normal playthrough, a Wish-bound monster hidden in the boney Marrow. This beast is not available from the start. Players must first progress toward the Citadel, acquire the Cling Grip ability, and accept the relevant quest before the fight can even begin. Why would such a simple-looking enemy be worth hunting? Because the Skull Tyrant guards a reward that no completionist should ignore.
How to Find the Skull Tyrant
The arena itself can be reached as soon as Hornet has obtained Cling Grip , but the boss will not activate until the quest Terrible Tyrant is accepted. To do that, players must visit the Wish Board in Bone Bottom . Once the Wish is active, the journey begins in earnest.
From Bone Bottom, use the Bellway to return to the Marrow map area. The route is straightforward but easy to overlook. Travel east until reaching the room with the Jail and the entrances to Hunter’s March and Bellhart. Then go south to the room that leads toward Deep Docks. Take a left into the chamber with the cart that crosses the lava. Instead of riding the cart, use Cling Grip to jump up to a previously unseen path.
Follow that path upward until the space brightens and a brass platform appears above. Before jumping onto it, take a left to open a shortcut. It is also wise to sit on the bench at the Flea Caravan to ensure Hornet is fully rested. When ready, jump onto the brass platform and go right until a giant skull comes into view. To trigger

