errand boy 

A man who is in the lowest rank of an organization/group and always doing chores for someone (especially a girl)

Enough is enough! As the errand boy, I don't want to give a fuck!

errand boy by Weiamoment March 26, 2018

Punk ass errand boy

A movie character who sells their soul for something like a shot at the big time, as opposed to just for money.

Mugatu was a movie character who became a punk ass errand boy.

Punk ass errand boy by Solid Mantis August 9, 2019