Smartest villain. The greatest enemy for Mario and Luigi is someone who refuses to stay dead. Smart, he built up many machines, technology, and robot allies, including Darth Vader, the entire Decepticon, Evil Bowser (his sensei), Entity 01 (FSAW), Black Yoshi, and Entity 02.

Smartest and deadliest villain. Greatest enemy of Mario and Luigi, he refuses to stay dead. He is very smart and able to make machines and mech suits, but always prefers to fight head-on with his lightsaber guns, most notably The Peacemaker (Desert Eagle) and the classic Uzi. His allies include Evil Toad, the entire Decepticon force, Evil Bowser, Entity 01 (FSAW), Black Yoshi, and Entity 02.

The creator of the viruses from Five Nights At Wario's (FNAW for short) is Deadliest villain. His only weakness is electricity, a fact known by only a select few heroes. Deadliest excels in combat and creates more than just viruses, using his endless cursed energy to continuously create and repair himself, making him a formidable force. His allies include Evil Toad, Darth Vader, the entire Decepticon army, Evil Bowser, Black Yoshi, and Entity 02.

The new leader of the Decepticon after Megatron death which is for good Crazy mad scientist one of the deadliest scientists of them all able to make one of the most deadliest Contraption of the mall threatening everything he could even the concept of death. His allies include Evil Toad, Darth Vader, Black Yoshi, Evil Bowser, Entity 01 (FNAW), and Entity 02.

There is no information about Black Yoshi. well we could found is that we have void powers and even with the Ancient Gilbert… only know that his can manipulate void and create a type of corruption called The Lost Ones(amplifying some of its strongest traits of the person it corrupt but the body will Couture and change). but he's just a normal Yoshi but Black with perfect picture memory and prideful attitude for some reason you can put aside his pride when working with his allies His allies include Evil Toad, Darth Vader, the entire Decepticon army, Evil Bowser, Entity 01 (FNAW), and Entity 02.