What is he wants me to call him?

Okay, here's the information as requested, formatted in Markdown with linked concepts:

• He might have a preferred Nickname he likes to be addressed by.
• Perhaps he has a specific Title or honorific he expects you to use (e.g., Dr., Professor, Mr., Ms.).
• Maybe he prefers the more formal Full%20Name in certain situations, but a more casual First%20Name in others.
• He could also specify a Term%20of%20Endearment if you know each other well.