OOC2
Are you asking in terms of question of sound or in terms of tense? As far as character voice, when I create a character, I try to hear the voice in my head. What do they sound like in various moods, occasions. If I can't hear the character saying it, then I will generally re-write the same phrase in a different way until I can.
I will say that I think you do a wonderful job as Vik. I try not to read into the other threads as I don't like to ruin a good surprise, but I have a clear voice of what Vik sounds like in my head. To me, you are doing it right so keep doing what you are doing.