This is a more, experimental version of the GP animatronic model. They wanted to see what kinds of modifications the frame could take/handle. Before they ever built an animatronic with a unique feature, they'd take ErRoR apart and rebuild him with said feature to see if it would work how they wanted it to. Because of this, its AI is unstable, but strangely also highly resistant to any and all forms of malware, viruses, and any other type of hacking and digital interference.