Charles Gunn's 2 syllables sit just outside the ideal 3–5 range.
Charles's 1 beat vs. Gunn's 1 create a natural cinematic snap.
Charles Gunn's softer consonants cost it screen presence.
Charles Gunn misses the alliteration hook that makes names stick.
Charles (7 letters) and Gunn (4) have a slight length mismatch, but it reads fine on screen.
Charles Gunn has mostly familiar phonemes with a few tricky patterns.
Charles Gunn has decent vowel richness, but stronger A and O sounds would lift it.