First Appearance: Wonder Woman 151 (1965)
Creators: Robert Kanigher and Ross Andru
Abilities: Alien blob that can absorb the properties of anything it ingests, rendering it immune to weapons.
Backstory: The Glop, a twisted looking amorphous entity, would make its Silver Age debut battling the original Wonder Girl—who was NOT, in fact, the beloved Donna Troy, but the adult Wonder Woman’s fantasies of being a teenage girl. (Diana never having a childhood would also daydream adventures of being a baby during this era, and thus Wonder Tot was born…)
While dreaming, Wonder Girl imagined the arrival of a space monster called The Glop, which could absorb the properties of anything and everything it could possibly digest. Assimilating various characteristics of the organic and inorganic alike not only meant it was immune to attacks and weapons, but while terrorizing party-goers, it also absorbs 100 rock and roll records *and * their lyrics. The Glop, with its emotions manipulated by the music, falls in love with Wonder Girl (easily one of her strangest suitors ever). Thankfully, it was all just a dream.
Wonder Girl ultimately vanquished the destructive sentient blob with time travel technology. She transports far into the past and trapped the creature on an uninhabited Earth. Though it was only a fantasy, Wonder Woman cautioned her that dreams have a way of coming true, and as it happened, the Glop would eventually return.
