what exactly are the horror terrors? like i kinda get it but anyone who says they know exactly whats going on at any point in homestuck is a liar so can you maybe define "Horrorterrors"?

Horrorterrors also known as “the Outer gods” are eldritch creatures that live in the Furthest Ring and whisper to Derse players.  They’re kind of Derse’s equivalent of the Skaian clouds.  They are very mysterious creatures with their own equally mysterious agenda and their involvement in Sburb is unkown.