One tiny elaboration on the many suggestions here. For the preferred translation using "has" instead of "is", I would prefer the translation "This man has good character." In this case the "a" emphasizes the singularity of the character, like ένα can in Greek. So:
This man has good character. = He can be trusted.
This man has a good character. = He has one good thing about him but otherwise is not to be trusted.
At least add "This man has good character" as one of the accepted answers.
That's right but these are two different languages and things are expressed differently. However, this question has already been answered on this page.
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