Crossover
Crossovers are built on a "unibody" car platform, while traditional SUVs use a "body-on-frame" truck platform.
Give your characters a concrete reason to be together. Don't just drop them in; use shared mechanics (like similar magic systems) to make the meeting feel organic. Crossover
The crossover is a fundamental move used to change direction and beat a defender. The Between-the-Legs Crossover | Basketball Crossovers are built on a "unibody" car platform,
If one universe has significantly stronger characters than the other, you'll need to find a way to balance them so one doesn't completely overshadow the other. Crossover