So, I've been toying around with the idea of themes for Chris, since everyone else has them. I've been set on an ambient theme for a while (https://www.youtube.com/watch?v=1mCg9oGvVk0) and I think I just found a fairly decent battle theme, even if he doesn't enter battles much. (https://www.youtube.com/watch?v=0Muucyonpxo) They're just pre-existing, Undertale-esque songs slowed way down, but that's how I imagine Chris's themes anyway. Long tones, not a very distinguishable melody, something you'd probably barely even notice while his conversations happen over it.