Well, Batman is all about order and justice in a very practical, no - nonsense way. Constantine, on the other hand, is more of a chaotic figure. He uses magic which is unpredictable. So Batman might be constantly frustrated with Constantine's unorthodox methods.
One interesting storyline could be John Constantine and Batman teaming up to fight a supernatural threat that's terrorizing Gotham. Maybe a demon is possessing the city's criminals, and Constantine's magic along with Batman's detective skills are needed to stop it.
In the comics, John Constantine's sexuality is indeed shown to be bisexual. This aspect adds depth to his character and is part of his complex personality.
The 'Hellblazer' series has many great Constantine stories. For example, 'The Family Man'. This one delves into Constantine's past and how his family history and his own actions have consequences. It's full of dark magic, moral dilemmas, and Constantine's signature cynical humor.
John Constantine in DC Comics is a master of magic and trickery. He's constantly dealing with demons and other supernatural threats. His character is a blend of bravery and cunning, making him a fan favorite.
One great 'John Constantine Supernatural Fanfiction' is 'Constantine's Cursed Case'. It has a really engaging plot where Constantine teams up with the Winchester brothers in a way that feels true to the characters. The author does a wonderful job of capturing Constantine's snarky attitude and his unique brand of magic.
There's a fanfiction where John Constantine crosses over with the Supernatural universe. It's really cool because it combines the dark magic and demon - hunting aspects of both worlds. Constantine's knowledge of the occult clashes and also meshes with the Winchesters' way of dealing with the supernatural, leading to some intense and exciting storylines.