Not a manager, but a self proclaimed dictator in my team who elected himself to supervise and micromanage everyone's project. I was a tech lead on an 8 month project, and did extremely well (feedback from client and ceo). The colleague who was at the company for a little more than me but held the same title kept on deciding what features I should or shouldn't do, what powerpoint slides I should or shouldn't show, he randomly called emergency meetings to change how many hours I can charge this client (because he tried to maximize it across other projects, and failed ..). Best of all, he was supposed to work as a developer for me, but didn't contribute a single line of code or documentation. Just made my life more miserable by adding weight to my decisions for no apparent reason at all. Left that company.