In 2026, the Citadel’s most theatrical roadblock still refuses to be subtle. Trobbio, the flamboyant gatekeeper of the Underworks in Hollow Knight: Silksong, is less a boss fight and more a one-bug cabaret with a grudge. After the Cogwork Dancers and a climb to the top of the Citadel, players interact with the cage, watch a cluster of icons bloom on the map, and eventually follow the bottom-left marker through the vaults. That route sneaks down onto The Stage, where Trobbio waits with fast, flashy attacks and an ego large enough to need its own bench.

The fight locks progress through most of the Underworks, so it is not optional for players who want the rest of the area. The first practical move is not heroic: after finding The Stage, turn back left and open the shortcut. The nearest bench is the Bellway bench directly underneath The Stage, and the walk back is short enough to preserve sanity. That matters because Trobbio is a wall, and walls are easier to chip away at when the respawn jog is not a pilgrimage.

Loadout: bring theater criticism and a drill 🎭

Slot Recommendation Why it earns a seat

Crest Upgraded Hunter Crest Familiar, flexible, and reliable under pressure

Primary tool Sting Shards Ranged chip damage when Trobbio is being dramatic at a distance

Secondary Boomerangs or drill Boomerangs for range; drill for burst damage

Utility Warding Bell Insurance against a failed heal in the chaos

Utility Weavelight Passive silk progress without demanding an attack

Upgrades At least two nail upgrades Makes the fight

dealnesthq