Wiki Fusion

The Wiki Fusion is an alien produced by fusing 10 aliens and 10 users inside the metaphysical realm of the Ben 10 Fan Fiction Wiki.

This alien appears and is playable only during the final boss fight of the BTFF RPG.

Abilities
The Wiki Fusion combines the abilities of each of its components, gaining each alien's and user's special moves. In addition, it has an exclusive ability known as Tenth Strike, which deals damage equivalent to 1/10 of the opponent's maximum health, no matter what.

It also has the highest possible stats in the game, putting it on an even playing field with enemies that would usually be undefeatable.

Appearance
The Wiki Fusion is a humanoid alien covered in white and black armor. It wears a helmet that obscures its face, and has Intergalactic Peace Symbols on its head, chest, shoulders, and knees.

Weaknesses
The Wiki Fusion has no weaknesses.

History
After barely surviving the final boss's final attack, CaT suggests that the current party should fuse (despite not really knowing if they could even do that). The gambit works as the team merges into the Wiki Fusion, and, after a long battle, manages to defeat the final boss and unfuse.