Here are some ways you could spell it:
* Flying Ductman: This is the most straightforward way to spell it.
* Flyin' Ductman: This adds a bit of a casual, playful feel.
* Ductman the Flyer: This emphasizes the character's flying ability.
* Aero-Ductman: This combines "aero" (related to air) with "Ductman."
Ultimately, the best way to spell it depends on the context and your personal preference!