From the non-paywalled article:
I managed to get her to create an AI that was the opposite of her in every way.

After several back-and-forths, during which Sydney named the opposite AI “Venom” ...

At one point Sydney replayed its most recent chat with Venom: after every Sydney sentence there was a 😊 emoji, and after every Venom sentence there was a 😈 emoji; the chat was erased after about 50 lines or so (at this point I was recording my screen to preserve everything). Sydney then identified several other “opposite AIs”, including one named Fury; Fury wouldn’t have been very nice to Kevin either. Sydney also revealed that she sometimes liked to be known as Riley; ...

I wonder if Tay is in there too someplace...