How do you spell Dexter in Japanese using English letters?

There isn't one single "correct" way to spell Dexter in Japanese using English letters, as it depends on the pronunciation you want to emphasize and the romanization system used. However, here are a few options:

* Dekusutā (デクスター): This is a fairly common and straightforward romanization.

* Dekuta (デクタ): This is a shorter, more casual version.

Therefore, depending on the context, either Dekusutā or Dekuta would be appropriate.