Conqueror Duck was one of Walt Fleischman's cartoon creations.
When the Ghostbusters arrived in the cartoon world, the first cartoon they met was Conqueror Duck.
- He is a reference to Disney character Donald Duck. He is also dressed as a Viking.
- On page three of Ghostbusters Issue #5, Conqueror Duck makes a non-canon cameo as a costumed employee of Fantastic Land.