Somewhere inside the code, DeMonster is born.
10,000 monsters are waiting to exist.
Every monster starts with a number. That number enters the system, gets processed through hundreds of traits and rules, and eventually becomes a creature of its own.
Some will be weird.
Some will be ugly.
Some will be beautiful.
Some will probably make absolutely no sense.
Different horns. Different eyes. Different mouths. Different colors. Different styles. Different movements.
There is no master design telling the system what a monster should look like.
The code decides.