He knows Putin for 30+ years and has been earmarked for execution by the Russian dictator. Living in Western Europe he has strong opinions on Putin and what motivates him – according to him Putin acts solely on personal hurt.
Originally from a military family Pugachev came to wealth in the 1990s. He is a studied man, owning two doctorate degrees. See more on Wikipedia.
Here is a recent interview from Rain TV.
«Думали: он чокнутый?» Сергей Пугачев — как Путин заболел Украиной, а война застала всех врасплох
Sergei Pugachev: How Putin fell ill with Ukraine, and how the war took everyone by surprise.