He's a Iranian Canadian comedian, electrical engineer and YouTube personality.
he teaches people about electronics and the dangers of it by shocking himself (sometimes accidentally) on how things work in the circuit and rectifies fake YouTube life hacks and fake free energy circuits/videos.
He also likes to experiment with electricity especially high voltage electricity experiments and he explains the properties of a certain elements such as lead and graphite that he included in his experiments.
He is also known as Mehdi Sadaghdar in real life.

an Indian guy who loves graphite and hates led. also a giant unibrow that he loves very much. he is very famous on youtube with 1million subscribers. he also loves to pass current through the pencil led