Can I Have Your Autograph?

One of the most infamous examples is found in "Final Fantasy X" (featured here in the HD Remaster), where you play as the main character, whose default name is Tidus. Due to the inclusion of voice acting in the game, a deliberate choice was made to never have the character's name spoken aloud by any of the other characters. As a result, the name is only used in on-screen text and occasionally by named NPCs without voiced dialogue. In the game's sequel, the character is generally referred to by other characters as "you," "him," "you-know-who," etc.

Example of:
Hello, [Insert Name Here]