Personal Info:
Real Name: Unknown
Also Known As:
Place Of Birth: Unknown
First Appearance: Silver Age Vol.1 1
Known Associates:
Group Affiliation: None
Base Of Operations: Mobile
Grudges: Justice League Of America
Creators: Mark Waid
Psionic Energy: Agamemno is made up of invisible, intangible, formless psychic energy. This energy can possess any inorganic or dead material (e.g. he can possess the dead wood of a boat but not possess the bodies of the JLA). Once he has possessed this material he can reshape it, usually into a standard body shape/colour so he can be recognized. This new body retains the properties of the material from which it is made. If Agamemno's body is destroyed, he can simply create a new one.
Mental Powers: Agamemno has undefined psychic powers that have allowed him to swap the minds/bodies of a second and third party.
Interstellar Travel: Agamemno is personally capable of interstellar and presumably intergalactic travel.
Agamemno is the son of the first sentient being to be created after the Big Bang. His father ruled the universe for eons before being deposed and killed by a group of similar, though younger, cosmic entities. Agememno, his heir, fled and has presumably been on the run from his father's killers ever since, all the while plotting to regain universal domination.
He was an interplanetary conqueror who controlled many worlds; in his search for universal control, he learned of 3 items that would allow him to become all powerful: the Absorbascon (a mind reading device) from Thanagar, a piece of crystal kryptonite, and the central power battery of Oa.
A few years after the formation of the Justice League of America, he learned of their existence from Kanjar Ro. He arrived on Earth and allied with Lex Luthor and several criminals, thus creating the Injustice Gang. These villains were promised control of Earth in exchange for helping Agamemno conquer the universe.