You also get there by any tactics that work, including bullying and dirty tricks. He’s never been known for his “gregarious” nature, except when it suits him. He can be vicious.
Come to think of it, maybe he would make it as a politician. :)
Vicious I think is a bit too strong, that implies dysfunctionality or crimininality.
He’s tough but fair, and that’s all he asks of others.