Since everyone is throwing in their headcanons about Gigi, I think that she has a laugh most similar to Dokibird which is absurdly unique. So I think her family is most likely from a Cantonese speaking region (Hongkong or Guangdong).90% sure she's Flip due to stuff said from PL but I don't remember what exactly it was. Also she's definitely US-born or immigrated very young.
As a man who grew up with 3 Vietnamese women, I can tell you that they are genetically all insane. Please never marry a Vietnamese woman for your own sanity.Please someone get me a Vietnamese-American vtuber that didn't whore out at any point of their life.