who is dogpack404, and why is posting their links obligatory?

Dogpack404 is a former mrbeast employee currently exposing mrbeast for varying misconduct, such as faking his videos, running illegal lotteries through his videos, doing a crypto pump n dump, making fraudulent claims about his merch, inhumane treatment of contestants and harbouring multiple sex offenders at his company. The list goes on and Dogpack404 is not the only one currently exposing things like this, but is maybe the most prominent.