Thijarian

Thijarians are a race of ancient beings, who evolved themselves into perfect assassins

Biology
Thijarians have metallic heads, with tusks and fourteen eyes each. They communicated telepathically, though they could use this to disorientate their victims. Thijarians were able to teleport themselves to different locations instantly.

History
After their home planet Thijar was destroyed, and the Thijarian race became extinct, the last survivors of their race (Kisar and Almak) vowed to leave behind their old ways of being assassins, and start a new, more noble mission; to travel across history, to observe and honour those who would've otherwise died alone and unnoticed.