Lots of great ideas, with all the work being tossed on the backs of everyone around them and never staying still enough to see any of them through to the end. The typical, "So who's idea was this anyway?" question the "grunts" ask, while everyone just shrugs since that person is long gone off to another idea/venture.
Irresponsibility - everything that goes wrong is the fault of everyone else.
Dishonest - They'll lie to your face, then if they get called on it, they'll blame another person for "misinterpreting" their lie, feeding off that "irresponsible" trait.
Always looking for an argument, even if they agree with you. I still can't wrap my head around how this is even possible. How do you argue with someone when you actually agree with them? This is a sample, generic conversation I had at many meetings with an ENTP:
Person A - I think we need to do this.
ENTP - I know. We need to do this! This is a perfect solution. We can get started by doing this, this and that. Doing this will solve the problem 110%.
Person A - Yes.
ENTP - Which is why we need to start now! We need to make sure everyone is all on board and then start...
Person A - We should already have everyone we need.
ENTP - And those people should all be getting to work so we can make this happen. I mean, I'm already doing this, that and the other thing. Someone else also needs to start taking action...
Blah blah blah blah blah....
Aside from the deliberately deceptive things they do, this probably pissed me off the most since it seemed to happen at every interaction. Nothing was ever mutual and no one ever had a casual conversation with them.
Then there's their "scorched earth" policy when it came to handling conflict. Cut everyone down verbally, belittle all of them, insult people any chance there was and leave nothing but complete chaos in their wake. Considering they created 90% of the conflict at work, conflict resolution was not their strong point.