Thetacorian

The Thetacorians are an ethereal race originating from the Microverse in the Marvel Comics.

Biology
The Thetacorians resemble figures wrapped in multi-color cloaks. According to Scott Lang, they are sentient light waves. Each color in a Thetacorian is akin to a vital piece of their biology similar to a human's arms and legs. Red for example is the part that contains their souls. Dead Thetacorians are grey sprawled sheets.

History
Scott Land aka Ant Man while attempting to teleport from a Nova Corps base was accidentally transported to an uncharted location in the Microverse. Nadia van Dyne aka Wasp managed to locate him but dicaovered the Thetacorians being preyed upon by a malicious vampiric entity.

Appearances

 * Ant-Man and the Wasp 001 (2018)