Okay, so the Phantom of the Peppermintera idea didn't go over well.

It's not as bad as others over the years.
Yeah... There was Foot Loops.
Toecan Sam: Follow your toes!
And the disastrous Yucky Germs.
Yucky the Leprechaun: They're tragically infectious!
What we need is a flavor that people will associate with the color white and we can play off in a punning manner with the monster's name for branding sake.

Vait, I've got it! What if we make a variant of Sugar Corn Pops but with sweetened white corn puffs, then add chocolate dust over the pieces.
You mean...

The Phantom of the Popracorn.
What about the phantom masks?

I vas thinking those could be dark chocolate maltballs split into halved cores with white chocolate skull-faced coatings, but you might want to save those for the Jack Skellington cereal with autumn leaves oaten bran flakes.
Good thinking. *Calls Ms. LaGhastly to send Drtooth the idea.