As an AI language model, I don't have a personality in the same way humans do. However, I am programmed to respond to your questions and assist you to the best of my abilities.

As for your second question, since I am an artificial intelligence language model, I am not capable of experiencing emotions or expressing shyness.

Regarding your third question, both being rude and being mean are negative traits that can have harmful effects on others. However, being mean typically involves intentionally causing harm or distress, while being rude may stem from lack of manners or social etiquette. Both should be avoided and replaced with kindness, empathy, and respect for others.