Tell-tale signs that Karl Castillo is trying to scam you: Fake Charm and niceness

Charm and niceness is always a tool people use to attain a certain goal.

Most charmers aren't a threat, but many conmen will use fake charm to try to deceive you of their harmful intentions. 

Karl Rikki Castillo can be very charming and nice. But beware because Karl is not sincere. He wants something from you. Sometimes Karl Castillo just wants to be associated with you to lend him more credibility.

A good defence, which helps you see the dishonesty in a would be charming conman is to consciously tell yourself: "'Karl Castillo is trying to charm me,'" as opposed to, 'Karl Castillo is charming”.