Parts of this are really nice. Matsuno Osomatsu, for example, really stands out when compared to Marshal and Doctor N. Gin. who don't look nearly as clean. The real focus, Dr. N. Fluence, however, is just an overall delight. Normally, I frown upon busy-looking OCs that try too hard to stand out visually, but I get the impression that Fluence is an eccentric genius. In that regard, the design works out well, especially if somebody like N. Gin is favorite character (and likely a strong influence) for your friend. He definitely deserves all the love those three are giving him.