Hollow Knight Troupe Master Grimm Boss Fight and Attack Patterns

Troupe Master Grimm stands as one of the most theatrical and memorable boss encounters in Hollow Knight. Summoned via the Grimm Troupe questline in Dirtmouth, this enigmatic figure tests player reaction speed and spatial awareness through a rhythm-based battle. Mastering this encounter requires a clear understanding of his telegraphs and strict discipline during every phase of the fight.

Understanding Grimm Ground Based Attacks

Grimm frequently initiates combat with a quick dash forward followed by a high-reaching uppercut that splits into falling fireballs. Players should shadow dash through his initial strike or take a step backward to safely land a counter-attack before he leaps into the air. Positioning yourself slightly to the side ensures that the descending fire particles will completely miss your character model.

Another grounded move involves Grimm opening his cloak to release three fiery bats across the arena floor at varying heights. To punish this attack, jump over the first low-flying projectile and dash toward Grimm to land a quick nail strike. Timing this movement correctly allows you to hit him before he teleports away safely.

Navigating Airborne and Area Threats

When Grimm teleports into the air directly above the Knight, he performs a sharp diagonal dive toward the player before tracking horizontally along the ground. A simple jump combined with a shadow dash allows you to evade both phases of the assault without taking damage. Alternatively, executing a precise down-pogo attack off his head during the dive can deal extra damage while keeping you elevated.

Grimm also summons giant fiery spikes that burst upward from the floor across the entire arena after a brief visual warning. Players must quickly identify the safe gaps between the glowing indicators and stay still until the spikes vanish completely. Trying to move horizontally during this attack often leads to taking unnecessary contact damage.

Pufferfish Phase and Strategic Tips

Upon reaching certain health thresholds, Grimm inflates into a large stationary pufferfish in the center of the arena and shoots waves of fireballs in all directions. Staying near the outer corners of the arena gives you the maximum time to react and hop over incoming low-floating projectiles. Focusing purely on evasion during this frantic phase is much safer than attempting risky spells or nail hits.

Equipping charms that enhance mobility or spell output can significantly shorten the duration of the encounter. Utilizing Charms like Mark of Pride or Quick Focus provides better spacing and reliable healing windows when Grimm is stunned. Maintaining patience throughout the match transforms a chaotic duel into an elegant dance of precision and timing.