The world is already filled with many heroes. But what will happen when monsters and aliens start to attack. A new hero will stand up, but will even he be able to face the coming darkness?

The world was hardly fair. That truth had been something Hiroshi Furinji had been familiar with for all of his life. In a world of superpowers and heroes, a Quirkless kid like him had no chance to be one himself. Until a giant lizard appeared in Mustafu one day. (updates 1st on AO3)

Since he was a child, Midoriya Izuku always dreamed about being a hero, one who saves others from danger. Now, at 22 years old, he's finally given the chance as he joins humanity's battle in facing off against the Kaijus that have plagued the Earth from the depths of the Pacific Ocean for over a decade. Oh... his mom is probably gonna kill him. Pacific Rim AU.

AU. When a giant robot attacks her hometown, Ochako Uraraka finds herself merging with a giant of light. Her name: Ultrawoman Cross, the latest Ultra Warrior, and a science officer of the Space Garrison. Now, these two partners will find themselves fighting aliens, supervillains, and monsters. But they'll also have new friends fighting alongside them. Plus Ultra!

Dying while striking a blow against a Kaiju that interrupted the entrance exam. Izuku merges with a young Ultra warrior to become the hero he is destined to be. Now I ask that you chant my name! Ultraman Z!

Want to know more about the OCs of "Ultraman Hero Academia"? Just take a read at this!

GEED: Gene and Destiny combined, with the 'D' and 'E' flipped around, to signify the twisting of fate. (BNHA and Ultraman Crossover AU, AfO and OfA do NOT exist.)

On his death bed, a being beyond our planet visits Izuku. From that moment, a supposedly quirkless child became something greater than anything imaginable. A whole new universe is opened up to Izuku, the power of an Ultraman his to command. The only issue is, Orb was not the only extraterrestrial creature to come back to Earth.

After the fight with Stain, Izuku suddenly hears a voice from his head. Who is this voice and why is guiding him to protect that man hold a metal container.