It is well known that Tohl Narita had three principles in designing Ultra Kaiju.
1. Kaiju is not a specter. Not making a specter two-headed or with several limbs.
2. Drop the idea that creatures on Earth just become huge.
3. Not designing something associated with the damaged body exposing the brain or internal organs. Not having blood run down.
Not all the Ultra Kaiju he designed match these principles faithfully.
Looks like there were times he had to consider the directors’ intentions and make a compromise by designing Ultra Kaiju not necessarily matching the principles unwillingly.
But it should be certain he tried to observe these principles as much as possible.
And they were observed basically.
I think it was these three principles that gave his designed Ultra Kaiju the charm which keeps attracting people up to now.
They have no disgusting appearance even though mysterious.
Alien Baltan or Dada appearing in “Ultraman” should be good examples.
Ultra monsters other than aliens sometimes look even humorous and cute.
Even though they are depicted as eerie in the drama, they look clean and charming.
They are also simple, stylish, cool and often surreal, I think.
It is amazing the designs don’t show any signs of age.
All these things should be why they are adored by people even as comical characters as well.