Many years ago, the dark ride now known as "Boo Blasters" or "Phantom Theater" was once a dark boat ride with The Smurfs in it. When you exited the ride, you were greeted by the stand that sold "Smurf" ice cream.
Well, the ride quit being a Smurfs ride many years ago, but King's Island kept the "blue" ice cream. Now, it's a kind of trademark offering there. A "food mascot" if you will. And I love it.
The most happening ice cream stand in the park... "blue" ice cream for all!
I can taste it now just looking at it.
After King's Island opened "The Banshee" this year, they also introduced a themed variant of the ice cream to tie in with the ride.