# Avengers (1963) #311

Published: 1989-12-01T00:00:00+0000
Series: Avengers (1963 - 1996)
Creators: Paul Ryan (penciler), Tom Palmer (cover artist), John Byrne (writer), Bill Oakley (letterer), Nel Yomtov (colorist)

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A group of mysterious robots infiltrate the Hydrobase! With the super-powered Avengers still in the Negative Zone, it's up to Quasar and the non-powered staff to defend their turf.