Aggressive Solutions International
A.S.I. is the corporate face of a criminal syndicate. They possess vast resources and have highly trained mega-tech empowered individuals at their disposal. Their primary work comes from secretly contracting out their special (and illegal) services to high paying clients.
Aliens (Xenomorphs)
Aliens (or Xenomorphs as they are formally known) are living, breathing weapons with absolute adaptability, no fear, and no mercy. They will destroy anything that attacks them. With their acidic blood, tongues with teeth and tails that can kill, Xenomorphs are one of sci-fi's most fearful alien species.
All-Star Squadron
A famed wartime super-group which included almost all the heroes of the time, combining members of the Justice Society of America, Freedom Fighters and the Seven Soldiers of Victory with assorted solo heroes. The team was briefly revived by Alan Scott during the Final Crisis storyline.