File:Mimir explains why Tyr still has his hand - God of War Ragnarök-2

When discussing Garm, Atreus asked about how he ended up chained up in hel. Mimir explains to Atreus/loki and Kratos how Tyr was responsible, tricking the wolf, losing an arm in the process. It did eventually grow back however as Tyr is resourcful.

This deviated from Norse mythology however, where it was Fenrir who was the wolf who was captured. There Tyr again offers his arm into the mouth of the wolf as a sign of trust, that they would not betray him. When Fenrir realised it has been betrayed and chained, its bites of Tyr's hand. It does not grow back...