Bad lot

But he's a bad lot, is the master — a thorough bad lot, take my word for it, and I'm one as knows him well — too well, by a deal.

“I went on, ‘I’m going to warn you, whether you like it or not. That man would as soon murder you in your bed as look at you. He’s a bad lot. You can say what you like to me, but remember what I’ve told you. He’s a bad lot!’”