~Basic~ This picture depicts a person who follows modern trends and isn't creative or different when it comes to fashion, or personality. This has a negative connotation because it implies the person is not interesting.
~Regular~ This picture is of a regular person. Regular implies neither negative or positive connotation. A person isn't bad or good based on the fact they are regular.
~Ordinary~ The term ordinary is generally positive. It means that the person is not weird or bad, and also isn't so regular that they're boring. Ordinary means that you can fit in with others and make friends, which is a positive attribute.