Portable laser-operated toothbrush

Sparkplug invented a laser-operated toothbrush for Transformers that was portable.

Transformers don't have teeth.

''That wacky Sparkplug!

Fiction
Starscream kidnapped Sparkplug to re-create the Sun-Pak he had developed for the Autobots. Starscream ordered Bombshell to inject a cerebro-shell into Sparkplug to ensure his cooperation.

However, the injection damaged Sparkp0lug's memory, and he couldn't remember how to build another Sun-Pak. After months of diligent work, he produced a portable laser-operated toothbrush, and the Decepticons threw him out to wander back to his family.

''That wacky Sparkplug!