I think what you are struggling with in this statement is word order. It grammatically works, but you sound like you might be in the process of editing and revising. I always want to make what I say more specific, more precise, and I want it to demonstrate strong word economy.
- The author ___________ a variety of qualities in the character, ____________.
In your first blank, use this list to determine a very specific verb to use. In the second blank, list the actual character's name.
Each of these are stronger verbs than the MAKE that you were trying to use. As an English teacher myself, when I see students move away from using do, have, is, are, make, give and a few other verbs that apply to many situations, I am then able to see them use their vocabulary to its fullest potential.