Mrbeast is a man with a mustache, and a youtube channel. He has 200 million subscribers, and records a lot. He's very generous. He built wells in Africa, he fixed blind people's eyesight, and gave multiple dogs a home. But sometimes he does a challenge for it.
Mack is Mrbeast's friend. He is a strong individual, good at most thongs and having good grip. But balance is his worst thing. He can't balance. He often encourages himself, being quite hyper sometimes.