I think this maybe related to the Hololive - Episode.0 pool, but I'm not entirely certain.

It’s definitely related to the pool based on the similarity in commentary format but I have no idea what character is being referenced.

If I'd have to guess based on appearance, I'd say that's Kanata.

Hmm.

I'm probably overanalyzing this but this 'Faceless Malice' could be personification of haters. It creates 'slaves' of alt accounts to flame anybody they didn't like, and when they got attacked back they'd just delete that account so they could start harassing anew with new account.