Sarrukh

The sarrukh, also known as the saurians and the progenitors of the Scaled Ones, were an ancient reptilian race that were counted as one of the creator races native to Abeir-Toril. They established the first great civilizations on the supercontinent of Merrouroboros during the Days of Thunder.

Description
They were known to have two forms. One was a bipedal form with a humanoid upper torso, arms, and legs and with a snake-like lower body. The other was a more serpentine form, snake-like heads and bodies, strong arms and clawed hands, and were similar in appearance to some yuan-ti abominations. Both forms were noted for their glowing red eyes that would elicit fear in all reptile kind.