Known as the maimed god, Tyr is the god of law and justice.

Tyr first made a major historical impact in a campaign to pacify the remnants of the fallen empire of Jhaamdath in the Year of the Striking Lance, −247 DR. This was known as the Procession of Justice, in which the god himself appeared on Toril, allied himself with Torm and Ilmater, and led a host of archons and angels against the chaotic and evil forces arrayed in the remains of the fallen empire. Ilmater aligned himself with Tyr in -243 DR. Torm joined them to complete the Triad some years later.

Tyr lost his right hand to Kezef the Chaos Hound, and his eyes were put out during the Time of Trouble, though the reason is unknown.