Fanfiction.net is another good place. There are many talented writers who post their 'Deadpool and Harley' stories there. However, the interface might be a bit more old - fashioned compared to AO3. But still, you can find some really great and unique fanfictions about the two characters.
One great 'Deadpool and Harley Fanfiction' is 'The Unlikely Duo'. It's really interesting as it shows Deadpool's chaotic nature mixing with Harley's insanity in a really unique way. They end up on this wild adventure together, and the author does a great job of writing their banter.
In a 'Deadpool meets Harley Quinn' fanfiction, there could be a lot of chaos. Deadpool's fourth - wall - breaking humor might collide with Harley Quinn's zany and unpredictable nature. Maybe they'd team up to take on some baddies in Gotham. Deadpool could be constantly making jokes about Harley's relationship with the Joker, and Harley would probably either find it hilarious or try to hit him with her mallet.
A Deadpool and Harley Quinn crossover fanfiction might involve a love - hate relationship. They both have unique personalities. Deadpool could initially annoy Harley Quinn with his constant chatter, but then they find common ground in their disregard for the norm. They could end up on a quest for some strange object that has power over both their worlds, like a magical joker card that also gives Deadpool the ability to control time or something equally wacky.
In fanfiction, their love could be a wild and chaotic affair. Deadpool's unpredictable nature combined with Harley Quinn's equally zany personality would make for a very interesting relationship. They might go on crazy adventures together, with lots of humor and action.
Another great writer is 'DeadlyHarley'. They are excellent at writing the banter between Harley Quinn and Deadpool. Their stories often feature really funny and witty exchanges between the two characters, making the reading experience very enjoyable. There are also new and upcoming writers who are making a mark. Writers like 'PoolAndQuinnNewbie' might not have a huge following yet, but their fresh take on the relationship between Harley and Deadpool is really interesting, bringing in new ideas and perspectives to the fanfiction world.
For a more unexpected villain, how about Lex Luthor? He could see Harley and Deadpool as threats to his plans in Gotham or wherever their story takes place. He would bring his high - tech resources and strategic mind to the table, which would be a different kind of challenge for Harley and Deadpool compared to the villains they usually face.
One idea could be that Harley Quinn and Deadpool team up to take on a common enemy who has been causing chaos in both their worlds. They could start off as reluctant partners, with Harley being annoyed by Deadpool's constant chatter and Deadpool finding Harley's craziness a bit much at first. But as they fight side by side, they learn to appreciate each other's skills and form an unlikely friendship.
One plot idea could be that Deadpool and Harley Quinn team up to take on a common enemy, like a new super - villain in Gotham who has a connection to some of Deadpool's foes. They could start off not getting along because of their different personalities, Deadpool's fourth - wall - breaking and Harley's chaotic - cute nature. But as they face challenges together, they learn to work as a team and even become friends.
At first, their relationship might be rocky. Deadpool's over - the - top and often inappropriate behavior could clash with Harley's more chaotic but still somewhat focused on the Joker - related drama. But as they spend more time together, they could start to respect each other's skills.