This is Knuckles' unique final boss. The Egg Golem is a large, stone-like robot guarding the Master Emerald. No rings are available.

- Phase 1: The Egg Golem attacks by slamming its fists and firing projectiles. It has a vulnerable head.
- Knuckles Strategy: Wait for the Golem to slam its fists, then use the brief opening to glide up and punch its head. You can also climb the walls to get above it for a drop-down punch. Dodge its projectiles carefully. This fight requires precise movement and timing.
- Weakness: The Egg Golem's head.
- Reward: Game completed (Good Ending if all Chaos Emeralds collected, Bad Ending otherwise).