Team Battle: Form a squad of three aliens and switch between them.
This is where the version comes in.
Unique Transformation MechanicsUnlike standard fighters, the best Ben 10 MUGEN builds allow you to transform mid-battle. Using a specific energy bar, you can swap between aliens to change your moveset on the fly.
: Good for older or less powerful devices, though it can be less stable with newer fan-made MUGEN builds. Official Ben 10 Alternatives