I'm writing a Star Wars fanfiction and the MC of my story is supposed to be a dramatic character (that's how he is in the canon). I'm giving an alternate timeline to his backstory, which was explained in an article and thus does not give me a good blueprint for his character prior to him becoming evil and somewhat insane. (General Grievous, for anyone who's a fellow nerd here)
My question is, how do you make a character both dramatic and likeable? I'm finding that the current portrayal I am giving is not dramatic enough, but I don't want to overdo it so much that you can't connect to him/like him. Plus I have terrors of accidentally repeating Attack of the Clones in terms of overdramatic behavior.
Does anyone have any tips on this?
Edit: For Star Wars fans who are confused, I am NOT looking to change his character. I take the canon very seriously when I write. The trouble is, as I stated above, that we do not have much material on what Grievous (or Qymaen, if you're a Legends nerd) was like before he turned evil. We just have a brief summary of the events that took place. As a result, I have to do a lot of guesswork with his character, since he went crazy at the same time he was turning evil. Again, I do NOT wish to change his character in the canon. There's just some stuff I had to make from scratch.