I personally really appreciate Choco. Not sure how involved the artists art with the writing for their characters but I think he absolutely nailed Melusines design, there's a genuinely deep love and appreciation for mecha musume design there (it did not remotely surprise me to learn he was a KOS-MOS fan), but also I think Melusines story is a great tragic love that plays really well into her dialogue and personality. Her neediness is born of her desire to be loved etc. and Choco, whether he was involved in writing her that way or not, clearly understands that part of her.

All of that and he's drawn her a thousand times, from complex visualisations of how her armor works, to small little etch-a-sketch pics of her showing that the two clock-hand weapons she uses are named after Geoffrey and Fromont (Melusine's sons in the original legend) and which is which. Any artist that draws their character outside of official material is cool, but Melusine has so much and it's genuinely all amazing and shows Chocos personal love for her.