Iggy Pop was a member of which band before going solo?

Iggy Pop was redefining what a frontman could be all the way back in the '60s. That skinny, shirtless guy on stage playing with peanut butter and anything else he could get his hands on would become the "Godfather of Punk" and released an album as recently as 2023. What band was Iggy wailing with before he struck out on his own?