The most powerful fusion system in history is here, and it is invincible when doing fusion addition operations.
Battery + Mouse = Pikachu!
Girl + White Dove = Celestial Beast!
Pea + Bow and Arrow = Pea Shooter!
Stick + monkey = Sun Wukong!
Lizard + Bat = Abyss Dragon!
Cars + Bees = Transformers Bumblebee!
So the question is, what should I do if I want Optimus Prime?
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.