Quote Originally Posted by Yliette View Post
Or simply "Son of Jecht" or "Lady Yuna's Guardian". Even in X-2, people always refer to him in third person.

But I believe it's pronounced "Tee-duss" since his Japanese name is Tida (meaning "Sun" in the Okinawan dialect) and his voice-actor James Arnold Taylor also pronounces it as "Tee-duss" during interviews.
Your right on how you pronounce it...I heard it sounded on Kingdom Hearts I, after you battle Wakka on Destiny Island in the beginning once or so... he says something about training with Tidus (pronounced Tee-duss).