Poppup was the home of the Impossible Man and his fellow Poppupians. The Poppuponians' evolutionary process was so swift that they could change themselves into literally anything in order to survive the menaces, which were constantly attacking them.^[1]

Poppup was eventually devoured by Galactus. The resulting indigestion caused Galactus' essence to deconstruct, and it remained in this dissipated state for some time.^[2]

The City of Poppupoopu

• Impossible Man^[2]
• Impossible Woman