The original comics barely gave names to the children, the center of gravity in this property is between the 60s TV show and the 90s movies, and the weird academic debate insisting that the Munsters was better social commentary. Most of what was best about the comics was pulled into both. I know there's other stuff, but the ransom cartoons didn't break any new ground.
Don't get me wrong, you should hew close to the source material. But, in this case, the source material are century old single panel cartoons from the New Yorker that are making fun of the Dutch. It's something to work with, but you just can't straight adapt that.