|Appears in:||The Coming of Hoole|
|Mate of Pleek,|
When Siv is battling the Hagsfiends during Hoole's hatching, she hears several hagsfiends shrieking as the ice floe tips, Siv secretly hopes that one of them is Yygryk, but it isn't.
Ygryk visits her friend Kreeth and asks for her help in which she must remove one of the hatchling's eyes so that the magic can seep in. When Hoole is by himself Ygryk attacks him and attempts to do just that. But she's stopped. Later on, Ygryk and Pleek are attacked by Ullryck, a fierce female assassin but they manage to escape.
Ygryk and Pleek are shown having a egg that they stolen and are staying with Kreeth. When they return, however, Ygryk is horrified when she finds her chick, turned into a Barn owl. Soon both the hagsfiend and the Great Horned abandon Lutta, and Lutta vows to make them pay.
Later, Pleek and Ygryk witnessed Kreeth using Frygot on Lutta. Ygryk admitted that they're "monsters" as they don't know how to love; they failed to love Lutta the way she was. It was unknown what happened to them.