Metallo could be an interesting villain in this fanfic. His kryptonite - powered body could pose a serious threat to Superman. And he could also target the Furies as they try to help Superman. His mechanical nature and single - minded pursuit of destroying Superman could make for an exciting conflict within the story.
You can expect some amazing action scenes. Superman's superpowers like flight, super strength, and heat vision combined with The Furies' combat abilities would be a visual treat. They could be fighting against a powerful alien or a super - villain who has the power to destroy cities.
In a Superman x The Furies fanfic, the story might revolve around a common enemy. They could team up to fight a powerful villain who is a threat to both of their worlds. Superman's strength and The Furies' combat skills would make for an exciting combination. Their different personalities would also add depth to the story, like Superman's altruism contrasting with The Furies' more warrior - like nature.
Well, it could still be Thanos. His goal of collecting the Infinity Stones would be a great threat to Superman's world as well. Superman would have to figure out how to stop Thanos from using the stones' power on a galactic scale.
A powerful dark wizard could be the main villain. He could be jealous of the clone's unique powers and want to steal them for himself. He might use dark magic to try and corrupt the clone or simply try to destroy it to prevent it from becoming too powerful.
One idea could be that Superman has to team up with the Furies to stop an otherworldly threat that is too powerful for him to handle alone. Maybe a powerful alien race is invading Earth and the Furies' unique skills and abilities complement Superman's powers in the fight.
Darkseid could be the main villain. Imagine Darkseid learning of Superman's ability to time - travel and using it to his advantage. He could try to invade different time periods to gain more power and resources. Superman would have to fight him across time and space to protect all of existence.
Lex Luthor would be a great choice. He's Superman's long - time nemesis. He could form an alliance with some of Batman's foes like the Joker. Luthor could use his intelligence and resources to create a plan that only Superman and Batman together could stop.
A powerful demon from another dimension could be the main villain. This demon could be seeking to destroy all Saiyans and starts targeting Goku, Caulifla, and Kale. He has unique powers that they have never faced before, like the ability to nullify their energy attacks.
Darkseid would be a great main villain. His thirst for power and domination could extend to Trunks' universe as well. He could see Trunks' advanced technology and power as a threat and want to take it for himself. His Omega Beams could be a real challenge for Trunks and the Justice League to counter.
Lex Luthor would be a great choice. In Smallville, he was a major adversary of Clark. In a combined fanfic, he could get his hands on some Kryptonian technology from Man of Steel and become an even greater threat.