Joey was a dollmaker, a very good one at that. He had a whole crew to help him with it. Their business was prosperous, worth millions. But, as with many things, it came to an end. He slowly got into the puppet making business and here things took a hard turn south. As Joey's mental health declined, so did his business. He began hearing things, he became irrational, egotistical, and dangerously obsessive. He pushed everyone out of his life trying to help him. He yelled obscenities, nearly incomprehensible, nor very understandable.
This warranted the attention of the famous Mr. Flaky, who even he was rather concerned for the guy's mental health. He agreed to help him accomplish his dream of bring his work to life, he claimed often times he can hear his doll's and puppet's talking to him, edging them to help them, often times screaming it. Flaky agreed to doing this and brought most of them to life. But this would, unintentionally come at the cost of Joey's life.
Ergo was a violently malicious doll, taking almost every once of Joey's egotistical tendencies, and a bit of his violent ones too (Mortigus and Clu'theirier got the more violent sides especially Mortigus). He didn't care what was in is way he'd do anything to do it. He didn't care what or who he trampled on to get to those goals, be the center of attention (admittedly he did have a little bit of a moral code that was effectively no excessive torture and not stoop as low Christovich's level).
He had fellow dolls to help him reach those goal, which he really only used like pawns, not really caring about them once he's gotten what he wanted out of them. However there are 2 he holds dear to his cold heart: Clu'theirier and Alison. They were both freinds and rather fond of him, Alison pretty much making sure he doesn't do anything stupid and oversee any critical details, and Clu'theirier for being a surprisingly good dude to really on.