Upon receiving the final reward(s) from the Grubfather, if the player rests at a bench and returns, they will find the Grubfather has swallowed all of the Grubs and is laying engorged on the floor. The grubs' babbling can still be heard from inside him, indicating they are alive.
It is unknown whether this is a cruel act on the Grubfather's part or just a part of Grub biology. The achievement the player earns after turning in all Grubs is called "Metamorphosis," and the charm references a "Grubberfly" - this may imply that the Grubs are simply larval stage for a butterfly- or moth-like creature.
At this time, Parry Master has 7,286,868 views for Hollow Knight spread across 235 videos. The game makes up over 1 day of published video on his channel, roughly 8.47% of Hollow Knight content that Parry Master has uploaded to YouTube.
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