ThunderClan is heavily featured in the books, being the Clan of origin for many of the protagonists of the arcs. ThunderClan cats are known for their skill at stalking prey through forest and undergrowth. The very first leader was Thunderstar, who was the son of the first SkyClan leader, Skystar. He was born in the forest to a she-cat named Storm, when the monster den collapsed. Thunder was her only surviving kit. ThunderClan was led by Bluestar in the beginning of the series.