In a more complex way, their powers could interact on a molecular level. For example, Superman's invulnerability might be enhanced by Invincible's unique cellular structure, or vice versa. They could also share their knowledge of different fighting techniques based on their powers. Since Superman has been a hero for a long time, he could teach Invincible some new ways to use his powers effectively in combat, while Invincible could show Superman some new, more brutal (but effective) ways of taking down opponents.
One common theme is power comparison. Since 'Invincible' has some extremely powerful characters, when crossed over with other universes, fans like to see how their powers stack up against others.
Well, for an Invincible crossover fanfic, you could do a crossover with the Teen Titans. Mark could learn a lot about teamwork and leadership from Robin and the gang. Also, a crossover with the Naruto universe would be interesting. Mark's superhuman abilities compared to the ninja skills in Naruto, like his flight against Naruto's use of chakra to run on walls and trees. And don't forget a crossover with the Avengers. How would he fit in with Iron Man, Captain America and the rest? It could be really cool to write about.
You can start by looking on fanfiction.net. It has a large collection of fan - made stories, including many Invincible crossover fanfics. Archive of Our Own (AO3) is also a great place. It has a well - organized tagging system that makes it easier to find the specific Invincible crossovers you're interested in.
Sure. 'Invincible vs. The Boys' is a great one. It imagines a scenario where the characters from 'Invincible' meet those from 'The Boys', and the resulting battles and power plays are really exciting.
One idea could be that Superman and Invincible have to team up to stop an alien invasion that threatens both their worlds. The two heroes could initially clash due to their different methods but then learn from each other.
In some fanfictions, there might be a crossover where the hero academies in both universes interact. Imagine U.A. High students visiting the school in Invincible's world. This could lead to interesting exchanges of training methods and ideas about heroism. Also, characters like All Might and Omni - Man could have some intense philosophical debates about power and responsibility.
You can make it unique by creating a new power system that combines the quirks from My Hero Academia and the powers in Invincible. Maybe there's a way to fuse a quirk like Todoroki's with Mark's Invincible powers to create something entirely new and exciting for the story.
I recommend the following novels with unparalleled strength and background to you:
1. " I Have Countless God-Level Backgrounds ": The protagonist of this urban novel activates the all-purpose system, creating all kinds of mysterious backgrounds and heading towards the peak of the world. Finished, perfectly meets your needs.
2. [Heaven and Earth Defies the Heavens]: This novel tells the story of an ordinary young man who accidentally activates the background system and has an amazing background, becoming an invincible existence.
3. " Activating the background system at the beginning of the game ": The protagonist, Zhuang Xin, is an ordinary young man, but she accidentally activates the background system and has all kinds of amazing backgrounds.
Please note that the novels recommended above are all urban novels. The main characters have a strong background and strength, which meets your needs.
Another idea is that Greninja gets exposed to some kind of meta - human - creating substance in the DC universe and gains new powers. It could then join the Teen Titans, sharing its unique Pokémon abilities with the group. It would be interesting to see how Greninja interacts with characters like Robin, Starfire, and Cyborg, and how it uses its powers in battles against the Titans' enemies.