Character Tweaks

Punching up one character from each iteration of Star Trek 

Not every character in a franchise will be perfect and Star Trek is no exception. While we love almost all main characters in our beloved space saga, some could use a few tweaks here and there. Nothing major, no drastic paradigm shifts of personality, we just punch it up here and there. We each select one character from each iteration and explain our choices.
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Which character tweaks would you perform if you were in the writer's room?