1 Samuel 16:7 says: "But the Lord said to Samuel, “Don’t judge by his appearance or height, for I have rejected him. The Lord doesn’t see things the way you see them. People judge by outward appearance, but the Lord looks at the heart.”
Don't judge people by their appearance. Remember that God judges by what's in the heart, not by what others look like.
Appearance can trick people, true character is shown by someone's life and actions. Matthew 7:16-17 says: " You can identify them by their fruit, that is, by the way they act. Can you pick grapes from thorn bushes, or figs from thistles? A good tree produces good fruit, and a bad tree produces bad fruit."
You can't judge someone by what they look like. Only by someone's heart and actions can you even begin to judge someone.