One idea could be the Imperium of Man encountering the Citadel Council. The Imperium's strict dogma and military might would clash with the Council's more diplomatic approach. For example, the Space Marines might be seen as terrifying super - soldiers by the Mass Effect races.
Commander Shepard would be a great character to include. His/her leadership skills and combat experience could be put to the test in the brutal and unforgiving Warhammer 40k universe. Maybe facing off against a Chaos warband or trying to negotiate with an Inquisitor.
In Warhammer 40k Mass Effect crossover fanfiction, a great concept is the mixing of combat styles. The high - tech weaponry of Mass Effect, such as the Omni - tools and assault rifles, against the brutal and often primitive - looking weapons of Warhammer 40k. It would be fascinating to see how a Mass Effect squad would fare against a horde of Orks. Additionally, the concept of different cultures' beliefs is interesting. The religious fanaticism in Warhammer 40k and the more scientific - minded approach in Mass Effect could create some intense ideological clashes.
The Space Marines from Warhammer 40k are often popular. Their super - human strength and combat skills would make for an interesting match against the various alien species in Mass Effect. Commander Shepard from Mass Effect is also a common choice. His/her leadership and combat abilities could be a great addition to the often dark and gritty Warhammer 40k universe.
One common theme is the clash of different cultures. The very different races in Warhammer and Mass Effect coming together often leads to interesting cultural exchanges and conflicts.
Sure. One great piece is 'The Convergence of Galaxies' which combines the unique races from Warhammer and the technology of Mass Effect in an exciting adventure. It has great character development.
One interesting plot twist could be the combination of Mass Effect's biotics with Warhammer's psychic powers. Imagine a character who has both and has to learn to control this new, extremely powerful force. It could lead to a situation where they are feared and hunted by both sides of the crossover world.
First, choose the two universes you want to cross over. For example, if it's Warhammer 40k and Star Trek. Then, research both universes thoroughly. Know the lore, the characters, the technology, etc. After that, come up with a basic plot. Maybe the Starfleet encounters the Imperium of Man and there's a misunderstanding that leads to conflict at first.
Well, it could involve Amberley Vail being transported between the Warhammer and Mass Effect universes. Maybe she uses her skills from one universe to survive in the other.
Some characters might adapt quickly by using their existing skills. For example, a Mass Effect soldier could use his combat training in the Warhammer universe. He'd just have to get used to different weapons and the presence of magic or psykers.