The Frostpaw tribe is a tribe of polar furbolgs featured in Wrath of the Lich King. Supposedly Grizzlemaw was built on the site of Frostpaw tribe's lodge and they invited the other friendly furbolg tribes to join them to shelter the winter with them. This lead to Grizzlemaw to becoming a safe heaven for all furbolg and for thousands of years these furbolgs have lived in peace, until corruption spread among them. Now driven with madness they rage war with the Redfang tribe to seek control of Grizzlemaw.
Killing members of the opposite tribe gives a buff, Frostpaw Ally, that makes the player neutral with them for 5 minutes.