Artanis was trained as a member of the Templar Caste, sworn to defend the Protoss Empire. Praetor Council took Artanis to Aldera as a youngling. There, he ignited his first psionic blade He was mentored by Tassadar, who taught him in the ways of leadership and how to be a proper warrior After his training, Artanis became the youngest protoss to ever achieve the rank of praetor
In his service as a Templar, Artanis served extensively alongside his comrade Fenix. The two traveled across hundreds of worlds The Templar Selendis served as his protege and as a liaison between Artanis and Tassadar
The following section contains information from a previous version of StarCraft that is ambiguously canonical.
One such world was Dannuth VII, inhabited by a race called the tagal. Fenix and Artanis led their forces against them and although the protoss were outnumbered 30:1, they still emerged victorious