Cell has a large range of different varying powers, that previous Z warriors have shown, this is due to the fact that it is essentially a combination of many different cells of many different beings that have travelled to been on Earth.
All forms of Cell possess enhanced strength, superhuman reflexes, and can move at impossible speeds. Cell is vaguely seen with the power of flight at first, but it becomes apparent that it is able to do so after achieving his semi-perfect transformation Cell has been shown to be able to do the Kamehameha, a powerful technique that it gained from the cells of Goku. After self destructing, Cell reformed with Goku's cells, this made him gain Goku's ability to use the Instant Transmission. With Freeza's untimely arrival on Earth, Cell was able to possess Freeza's cells. A key trait that Cell was able to use from Freeza was the ability to survive in the vacuum of space as well as the ability to use several of Freeza's other techniques. Due to its cells, Cell is able to become much more powerful upon healing after a near-death experience. From Piccolo, Cell gained the ability to regenerate. Unlike Piccolo, Cell is able to regenerate from any cell, and can regenerate even if microscopic particles of it remain. In the manga and anime, Cell has mentioned it can make a Spirit Bomb if it felt like it ,the Spirit Bomb is a technique that only the pure of heart can use, Cell having the cells from Goku probably inherited the power to do a spirit bomb, however this was never confirmed in the manga or anime, the only time Cell has used Spirit Bomb was in the Dragon Ball
Once a great sorcerer, he seeks to plunge the entire world towards it end.
He seeks the heart the greatest of the innocence (powerful objects from god used to battle akuma) so that he can destroy it and destory all other innocence. Behind him is his army of akuma (weapons crafted from the corpses of humans when their loved ones wish to revive them) as well as the Noah Family composed of 13 apostles infused with the genes of Noah himself(each member of the family has supernatural powers).
Using this he fights the disciples of god in the form of the Black Order and their akuma killing Exorcists. He is the main antagonist from the manga and wields a powerful broadsword and a pumpkin headed parasol named Lero.
I picked the Earl due to the fact that of his personality.
He acts humble and caring helping those around him and cares for his 'family'. He acts much like a loving parent does and draws all to him. He tempts the weak at heart in order to manipulate those near to him and has impressive control over dark matter(energy used by akuma to fight exorcists).
He justifies his goal and can easily defeat even the strongest of the Generals(exceptionally strong exorcists). His past plus his astonishing power and natural ability to make those around him like him makes him a potent villain.