answered:
Well they weren’t going to make him exactly like in the movie. You can get away with a lot more in animation than in live-action and they probably thought that having a real Belle co-star and fall in love with a beast that looked like the cartoon or an actual beast would be odd. Not to mention the effects or heavy make-up they would have had to use.
Like I said, though. That is how he looks in the play. They probably used the same look because it’s just as iconic. Idk why people don’t like it XD
But the whole thing about him was that BECAUSE he looked like a beast people would often try to attack them. Having him be mroe human kind of defeats that aspect of the movie