Aegis is the senior agent of ESAS, being (with Iodin) one of the first two agents transferred from the DMS to set up ESAS in 2004.
Aegis is 25 years old. She was partnered with Iodin from her transfer until 2008, and was then partnered with Riboflavin. Her response center is RC 2818.
Aegis is an X-men mutant, recruited originally as a bit character in an X-men fanfic being sporked by DMS agents in 2003. Her mutant powers include the creation of energy shields, as seen when she defended Logan and Laburnum from a grizzly bear loose in the Cafeteria in 2006.