Definitely consider Circe. She is a powerful sorceress with a long history of causing trouble for Wonder Woman. Her magic could be a huge threat. The Joker is also a must - have in a sense. His chaotic nature could add an element of unpredictability when he gets involved in the story, perhaps teaming up with other villains. And Ra's al Ghul, with his Lazarus Pit - related schemes and his desire for global control, would make for a formidable adversary against Batman and Wonder Woman.
Cheetah would be a great villain to include. Her connection to Wonder Woman's world and her fierce fighting skills would make for some exciting battles. Also, Bane could be interesting. His brute strength and strategic mind could pose a real challenge to Batman and Wonder Woman when they team up. Lex Luthor is another option. His intelligence and vast resources could create a complex and dangerous situation for the two heroes.
Darkseid is another possibility. He's a powerful and menacing villain. If he sets his sights on Wonder Woman, Batman would be forced to act. He'd need to use all of his skills and resources to save her from Darkseid's Omega Beams and his army of minions.
The Joker is always a classic choice. His chaotic and unpredictable nature would create a great contrast to Damian's more disciplined upbringing. It could also put a strain on the relationship between Batman and Damian as they deal with the Joker's madness in different ways.
Lex Luthor could be one of the main villains. His intelligence and thirst for power often put him at odds with both Wonder Woman and Batman.
There's also 'Batman and Wonder Woman: The Unlikely Alliance'. This fanfiction takes a different route by starting with their initial distrust of each other. But as the story progresses, they discover they have more in common than they thought. It's full of action and has some great character development moments for both of them.
Well, there's a fanfic called 'Batman and Wonder Woman: New Beginnings in New 52'. In this one, it starts with them having a bit of a misunderstanding which then leads to them realizing they need to work together more closely. It really plays on their different personalities and how they can complement each other in combat and in solving mysteries in the New 52 universe.
Deathstroke is always a formidable foe. He has a history with both Batman and Nightwing. His skills as a mercenary and assassin could lead to some intense battles and strategic cat - and - mouse games in the fanfiction.
Well, it's hard to say who the 'best' are as it depends on personal taste. But some popular authors might include those who have a deep understanding of both characters. For example, there are authors who have been writing fanfiction for a long time and have really delved into the psychology of Batman and Wonder Woman. They can create stories that feel true to the characters.
One great Batman Wonder Woman fanfiction is 'The League's Heartbeats'. It beautifully weaves their relationship within the context of the Justice League. It shows how their different personalities, Batman's brooding nature and Wonder Woman's noble spirit, complement each other.
One great 'Batman Wonder Woman' fanfic is 'The League's Heartbeats'. It beautifully explores their relationship within the Justice League. The story delves into how their different personalities, Batman's brooding nature and Wonder Woman's noble spirit, interact and create a unique dynamic. Another interesting one is 'Shadows and Light'. It shows a more angsty side of their relationship, with challenges they face together against a powerful new villain. The fanfic also has some great action scenes that keep you on the edge of your seat.
I recommend 'Batman and Wonder Woman: A New Alliance'. In this fanfic, the story delves into how Batman and Wonder Woman's relationship evolves from just being colleagues in the Justice League to something more personal. It's a relatively short but engaging read, with some great action scenes and dialogue that really bring the characters to life.