The Fusion-Machine 9000 at work.
The Fusion-Machine 9000 is a machine that can combine two characters and produce a new character with a mix of both characters abilities and his/her or it's own looks. It is NintenDON'T's cheap rip-off version of the Wa-Machine.
Why it was invented[]
This is a machine invented in the year 9000 by NintenDON'T. For whatever reason one day, the leader of NintenDON'T thought that it would be a good idea to invent a machine that could combine people and their abilities to create new people easily. This machine was created very recently so only one Fusion-Machine 9000 exists. Anyway, it took one decade to create. This made NintenDON'T very satisfied. Instantly after it's creation it was approved by OVER 9000 (A.K.A Vegeta).
What it has created so far[]
One month after it was created WaWaluigi stole it and used it too create an insane being named Zeegee. Sadly Zeegee was it's best creation. A day after that NintenDON'T stole it back.
A few more years later. Scientist-San snuck into the Nintendon't factory and created Akita Neru after combining Hatsune Miku with Kagamine Rin. Surprisingly, this wasn't the first instance of Vocaloids and the Fusion Machine. Plankton used this machine to make Gaito, a mixture of KAITO and Gladion just a couple of weeks before Scientist-San did his action.
At the end of time, Somebody will steal the machine from NintenDON'T, somehow kidnap both Billy Mays and Thanos, and then put them both in this machine to make Dimentio.
Captain 37 borrowed the Fusion-Machine 9000 at some point, and then he used it to fuse Mama Luigi and Keyaruga into Beta Luigi.
Actually, now that I think about it, the Fusion-Machine 9000 was stolen and used quite a lot. It also created Sonichu, revived Fluttershy, and invented Flying Toasters. Hyness, Jicama, and Azuiyii are also a few other examples of what the machine has made.
Albeit temporary, Raichu made a lot of fusion forms of him and other Pokemon.