Quicksilver

First Appearance: X-MEN Vol. 1 #4
Base of Operations: Currently a castle on the Hudson River in upstate New York that is owned by the High Evolutionary; (former) Transia; Avengers Mansion, Manhattan; Avengers Compound, Palos Verdes, California; X-Factor headquarters, Washington D. C.
Occupation: (current) Adventurer, (former) Terrorist, officer of the Inhumans militia, United States government operative
Group Affiliation:: Avengers, unofficial member of the Royal Family of the Inhumans, (former) Brotherhood of Evil Mutants I, X-Factor II