*Galatea, also known as Tea, was Supergirl's clone and Cadmus's product/asset.
Galatea shared the same powers as Supergirl yet, due to her accelerated growth and the specialized training she received at Cadmus, she possessed superior strength and skill to her counterpart. Akin with her sadistic nature, Galatea seemed to favor heat vision as a primary offensive ability and used it with great skill and accuracy. Her heat vision also seemed to exert far more concussive force than Supergirl's.
As an Argoan clone, Galatea was presumably vulnerable to Kryptonite, red sun radiation, and magic.
Galatea's appearance bears a resemblance to that of Power Girl, the Earth-Two counterpart of Supergirl in DC Comics, with the white outfit and noticeably more mature physique than Supergirl, but sans the cape and blue gloves and boots. This is likely intentional, as she is seen with a red towel around her neck in the same manner as Power Girl's cape in one episode. Ironically, Power Girl herself would later get a clone named Divine, who shares a similar backstory and personality to Galatea. Her background is also reminiscent to that of the Superboy introduced by DC Comics in 1993, who is also a clone (of Superman) created by Project Cadmus.*