One of the members of the Shi'ar Empires Imperial Guards, Astra is an alien with mass altering abilities which allow her do become intangible. She has seen all the major changes of the Guardsmen allegiances and membership throughout the years.

Astra

One of the members of the Shi'ar Empires Imperial Guards, Astra is an alien with mass altering abilities which allow her do become intangible. She has seen all the major changes of the Guardsmen allegiances and membership throughout the years.

All data from the awesome folks at Marvel.