First five aren't extra-terrestrial, Martian Manhunter appeared in Legion Lost and GLC, and who knows, maybe at some point a member of Stormwatch did check out a certain crash landing in Kansas, figured it wasn't an real or immediate threat, and helped keep the government off Ma and Pa Kent's back.
no subject
NOWHERE
The Firestorm projects
The Rot
several of the Olympian Gods were hanging around in human cities.
And besides conspiracies:
Did they happen to notice that virus from the future in Legion Lost?
How many aliens crashing to Earth have they caught notice of? A Kryptonian, a Green Lantern
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