Maggot

Behaviour and Tactics
Two of them are encountered in Forgotten Crossroads above the False Knight's boss arena, after acquiring the Mantis Claw.

Flees from The Knight, posing no threat. They do not respawn.

It is best to leave the left one alive until the Failed Champion is defeated. If the player loses in the dream fight, they wake up with full health but no SOUL. Using the Dream Nail on the Maggot is a convenient way to re-enter the fight prepared with full SOUL.

Locations
Found in Forgotten Crossroads above the False Knight's arena. They appear after False Knight has been defeated, but the room must be re-entered for them to spawn. Requires Mantis Claw to reach.

Trivia
Опарыш Gusano
 * The False Knight is actually a maggot that stole Hegemol's armour to protect its siblings.
 * In the game files, they are referred to as "prayer slug".