My guess is that he was dirt cheap, probably helped to get more monsters into part 3 for little cash, and then for paradox they massively increased the number of monsters he drew, which fit into the concept of most Tartarus monsters being insufferable abominations, all while costing a lot less money but boosting the number of monsters, this is the most likely scenario if you ask me. A little less likely, but perhaps the audience enjoyed the scenes a bit too much for the developers liking and getting in some Xelvy stuff was supposed to motivate the people to actually fear the monsters instead of just drooling over them. There could of course also be a small chance that the dev either overestimated the number of people who are into getting swallowed by incredibly weird monsters, or they just wanted every possible fetish to be included and thought Xelvy was as far out as it could get.
I am massively annoyed by Xelvy, not because of all the funny looking abominations, I do not mind them was long as they are irrelevant Tartarus grunts, but the guy somehow manages to make basically every scene unenjoyable for me even with rather basic stuff like a normal female blowjob scene, which sucks because they put him in charge of relevant characters like Sonya and several archangels. Guess theres still dozens of monsters in the game one can enjoy, but the guy is definitely a nuisance to me and I would pay more money for the game if his creations were not in it, or if he was a minor artist instead of his monsters appearing in legions. This means the message that the hentai pics for one or several archangels were drawn by someone else is an incredibly positive one for me, and that can only be an improvement.
