Grubs are creatures found trapped in glass jars throughout Hallownest. They can be freed from their jar after which Grubfather grants a reward for each Grub that is saved. When close enough to their location, a faint crying noise can be heard in their general direction. The Grubs talk in high-pitched babbles and cannot be listened to. They can be freed by breaking the jar with the Nail, after which the Grub burrows into the ground and returns to Grubfather. Obtaining the Collector's Map...
