From “Rain,” here’s a summary of this Verge article:
Following John Legend, Issa Rae is now the second celebrity providing her voice to Google Assistant as a “voice cameo” for users. By enabling the voice, her recorded replies will be triggered for a specific set of queries. For now, users wanting to hear John Legend or Issa Rae voices can access them for free, unlike Alexa’s upcoming launch of Samuel L. Jackson’s voice. It is early days with only a few celebs entering the voice assistant world, but it is expected that many more will follow.