Templar

Templar in human history: member of the Catholic spiritual and knightly order founded in the 12th century in Jerusalem
Templar in StarCraft universe: A member of the warrior caste. Protoss society is divided into castes: Warriors (Templars), Workers (Khalai) and Managers (Judges). Any Protoss warrior is a Templar. However, the word "Templar" is only in the names "High Templar" - a skilful psionicist with a connection to the Khala and "Dark Templar" - Nerazim. Any Nerazim warrior is a Dark Templar. Their psionics are not based on a connection to the Khala, but on the energy of the void.

The most famous are Tassadar, Zeratul, Artanis, Phoenix, Alarak, and Adun.

En Taro Tassadar!

“Today, the Knights Templar is the name of a branch of Freemasonry”
“Only the potent energies wielded by the dark Templar could ensure a cerebrate's permanent destruction”