He was born in 1990. After finishing school, Petro went to study to become a pastry chef. Later, he became interested in a healthy lifestyle and various workouts.

"I used to live poorly, herding cows and selling mushrooms. I dressed poorly. I was insulted. Teachers did not believe in my talents. I didn't give up and proved it to everyone!" - Petro. 

In 2015, he went to the audition for the 7th season of Ukraine's Got Talent and passed.

Petro Mostavchuk is officially unemployed, but he does a lot of housework, which he regularly highlights in his videos: mowing grass, planting potatoes, fixing plumbing, etc. It is also known that Petro travelled to Poland for various jobs, where he learnt the language a little, even started rapping in it.

Some time after Russia's invasion of Ukraine, he received a call-up and was mobilised into the Armed Forces. He serves in the 24th separate mechanised brigade named after King Danylo.