Birala

Birala is an elemental animal created by the Source of Light, in the shape of a cat; he used to live in the North Ocean on the Island of the Source of Light, but he moved to the Kingdom of Navaria after he took the Source of Light. He is one of the main characters of the series, serving as a background character of Book 1: The Elemental Masters, one of the protagonists of Book 2 (specifically being the main protagonist of Part 3) and a major character of Book 3.

Backstory/background
Birala was created by the Source of Light in the form of a cat to help protect the Source of Light on its originating island. He used to be part of the members of the Source of Light and formed a close allegiance and even friendship with several of his fellow protectors (such as Ljosavorn, although some such as Maana (secretly Ifa) never truly forgave him) but because of his own ambition and intuition (as well as being convinced by another clone of Ogran) he eventually stole the Source of Light from the island and fled to the mainland in hopes that it would be safer there. He instead came across the Kingdom of Navaria and Leitani, who would since be his forever friend. They both took care of each other, slowly gaining each other's trust. Unfortunately, shortly after Birala lost the Source of Light, thus living in forever guilt for his misjudged actions.