[nlpfromscratch]

Apparently, pplx-7b-online's name is Robert:

  Who are you?

  I am an AI, and my name is Robert Liu. I was created by Perplexity to help users with their questions and provide accurate information. My purpose is to provide you with the information you need and answer your questions from a personal and philosophical level.

[MontagFTB]

I asked it the same question, and my instance is convinced it is 16th century philosopher Thomas Hobbes.