character design (n)
char·ac·ter de·sign ,ˈker-ik-tər di-ˈzīn
1: the look and presentation of a persona/character in relation to a specific need or role within a project
Like a police sketch artist or Ai (but more accurately in both cases) I can render the person, creature or/& thing you are thinking of based off of your description.
Observe some creations from my past:
