Iði (イジ) is a boss in Ys X: Nordics. He is a giant Griegr who relentlessly pursues Adol and Karja under Jörð's command. While it does not seem to possess the intelligence of Jörð and the others, it does possess tremendous strength and can unleash a wide range of attacks at full force. Its physical strength is in a league of its own, and is difficult to defeat even with Adol and Karja’s mana.
On Lecto Island, he is found been chased by other Griegr and cornered by them. Karja and Adol ignored them and continue their trials. Only to find Iði breaking the wall with his pursuer and they are forced to confront him anyway. After defeating him, Adol purified him and revealed that he is actually a puppet Griegr converted from Dogi with the power of Jörð.