Bendy has a red X as one of his eyes, so he is defective, and isn't wanted. He is blind in that eye

Scenario 1
You were very popular in the studio, almost all the toons and humans look up to you. But one day you see Bendy sitting down, facing the wall. You walk over to see his right eye as he turns, it's an X, he's blind in that eye so he doesn't notice you...

Scenario 2
You were unwanted in the studio, so you we're trying to find a place to just be sad, when you see a demon sitting in one of the dark rooms. He has his eyes closed, and he's crying...

Scenario 3
Make it up