Let's consider the characters' movement abilities. In Mass Effect, characters can use jetpacks for mobility. In a crossover, a character like Lightning from Final Fantasy XIII could use a jetpack - like device to enhance her already fast movement speed. And on the other side, a Mass Effect character could learn to use the teleportation spells from Final Fantasy to quickly move around the battlefield. This would create a whole new dynamic in combat, where characters from both universes can learn from each other's unique abilities.
For example, the biotics in Mass Effect could be combined with the summons in Final Fantasy. A biotic user could enhance the power of a summoned creature like Ifrit. Or the tech abilities in Mass Effect could be used to upgrade the weapons in Final Fantasy. Garrus could help improve Cloud's Buster Sword with some advanced Mass Effect tech.
Master Chief's super - soldier abilities combined with Ryder's biotic powers would be extremely powerful. Chief's physical strength, combat training, and strategic thinking, along with Ryder's ability to manipulate mass effect fields, could create a character capable of taking on the toughest enemies. For example, Chief could provide cover fire while Ryder uses biotics to lift and throw enemies.
One way is through biotics. In Mass Effect, biotics are a form of biological manipulation of mass effect fields. Cthulhu Mythos entities often have strange, otherworldly biological features. Fanfiction could combine these by having a character gain new biotic abilities inspired by Cthulhu Mythos creatures. For example, instead of the normal biotic powers like lift and throw, a character might develop the ability to summon dark tentacles similar to those of a Cthulhu - like being.
Well, you could start by having a character from Crysis, say Prophet, end up in the Mass Effect universe. He could use his Nanosuit skills to become a sort of mercenary or a special agent working for the Citadel. His combat experience and advanced suit would make him a valuable asset, but also an enigma to the Mass Effect characters. They might be both intrigued and a bit wary of his unknown origin and his high - tech gear.
In a crossover, the Dragonborn's ability to absorb dragon souls could be related to the Halo universe in an interesting way. Maybe the dragon souls contain some sort of energy that can be used to power up Halo technology. The Dragonborn could team up with Halo scientists to study this. And the Spartans' training in various terrains could be combined with the knowledge of Skyrim's different regions. They could teach the Skyrim locals about new combat strategies, and in return, learn about the magic and lore of Skyrim.
Another way their abilities could be combined is through their senses. Zero has enhanced senses due to his nature. Kiryu also has sharp instincts from his years of fighting on the streets. They could use their combined senses to detect hidden enemies or traps. Zero's supernatural sense of smell or hearing could be used in conjunction with Kiryu's street - smart awareness to scope out dangerous situations and plan their attacks more effectively.
Well, a really cool plot could be that the Mass Effect Relay network somehow gets connected to the Crystal Materia in Final Fantasy. This causes chaos as both universes start to blend. Characters from both sides have to figure out how to separate the two worlds again. Along the way, they discover that there are ancient forces at work in both universes that are related. Tali could use her engineering skills to help repair some of the damaged Crystal Materia, while Squall could teach her some sword - fighting techniques from his Gunblade.
One way to combine them creatively could be to have Naruto characters interact with the technology and species in the Mass Effect universe. For example, the Juubi's power could be a mystery that the Mass Effect characters are trying to understand or control. Maybe a character like Naruto could use his chakra powers in a way that is similar to biotics in Mass Effect.
The Asari from Mass Effect would be intrigued by the Ancient technology in Stargate. Their natural curiosity and long lifespan would make them eager to study it. Meanwhile, the Goa'uld from Stargate might see the various species in Mass Effect as potential hosts or slaves, which would obviously lead to conflict. But the more moral characters from Stargate would oppose this and try to protect the Mass Effect races.
If Tali met Naruto, she would be amazed at his ninja skills. Tali is used to advanced technology, but Naruto's physical abilities and unique jutsus would be a whole new concept for her. Naruto would be interested in Tali's engineering skills and might ask her to help create some new ninja tools. Garrus would probably respect Naruto's combat skills and see him as a valuable ally in a fight. And Naruto would be drawn to Garrus's sense of justice.
The trainers in the Pokemon world might be able to use Kido spells if they are influenced by the Bleach world. They could combine these spells with their Pokemon's moves. For example, a trainer could use a binding Kido spell and then have their Pokemon attack the immobilized enemy. The Soul Reapers, in turn, could use Pokemon as mounts or partners in battle, enhancing their mobility and combat capabilities.