Originally Posted by
guttering flame
Not really. It's because we're Vertebrate. If you have a functioning model it's hard to change the basic elements that compose it. Octopuses and giant squids are just one example of a large animal that came from a different evolutionary path and therefore have more limbs and, quite exceptionally no skeleton.
The real reason this comic is quadrophile is to help the readers empathise and witheven und erstand the characters.