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Scooby-Doo History on Twitter: "On this day in 2017, OK KO Let's Be Heroes first aired! Scooby Fact: in the episode “Monster Party” the ghoul school girls make an appearance. @HannaBarberaCap https://t.co/tO96vizrcm" /
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1988's Scooby Doo's Ghoul School Sibella in OK KO style!! | Graphic novel art, Cartoon network art, Concept art characters
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