A guy with a pretty fucked up aggressive personality.

At that point I already had ...more than a few issues with bald headed aggressive men for other reasons.

So from the beginning I was very wary around him... And his behaviour - sweet talking while you could _feel_ the knifes raining down your neck - made me even more defensive. I avoided him like the plague.

But for better or worse I became his supervisor. I had to work with him.

He made it very evident what he thought of having me as a supervisor - from day one there were very non subtle hints.

Every question turned into a discussion... Every discussion turned into screaming... Every screaming from his side turned into me leaving the room. I've had my anger issues and I don't tolerate such behaviour.

The tip of the iceberg was not only his behaviour, but also his limited knowledge.

He worked > 15 years in the company, me 2.

Guess that played a role, too.

But his knowledge was somewhere between junior to average.

Some of the tasks exploded not only in time because of all the rage tantrums he had - but more because he didn't solve them properly, despite given clear guidance.

Since at that time it was obvious that he either quits or will get fired, we had to look at previous projects.

It wasn't pretty - to state it in a polite way.

Non polite way: A shitfest of the worst kind possible.

All in all - he didn't quit.

Nearly half a year later he had to be fired.

Company couldn't fire him earlier for various (eg law) reasons.

But damn he made that time a living hell.

Rarely a day without screaming, door slamming, discussions that went like "I've checked all my literature, what you're saying is wrong." (without stating what literature, the discussion just turned round and round...) and so on...