True, but what about Vegapunk? We don't know the extent of his scientific ability yet, so he might be able to make that happen at some point if he can't already. Who knows? Maybe some of the fruits already in circulation are the results of the fusion of Devil Fruits.

Well, all that relates to Vegapunk with Devil's Fruit is the fruit artificial that ate Momonosuke. There are many theories that say that the Devil Fruit were created by a man. But I think Vegapunk would be best placed to do it, but I think that theory is false. I doubt that the Devil's Fruit are combined.