To describe someone who thinks of themselves to have some characteristics, I guess we can use "wannabe".
What is a word that describes someone who is thought to have some characteristics by others, that is, a word meaning "supposed-to-be" or "thought-to-be"?
For example, I want to improve the word choices in
If you can convince the superior-wannabe they are better than the inferior-thought-to-be, they won’t notice you’re picking their pocket. Give them somebody to look down on, and they’ll empty their pockets for you.