Vriska Serket, whose lusus constantly demands she feed it, received Cetus as a denizen, a monster known for eating every single fish on the Land of Light and Rain.

More obviously the number 8 is homophonic with the word ‘ate’ (and also takes the shape of the infinity, related to the ouroborous symbol depicting a snake eating itself), and in Homestuck’s symbology the sun - the symbol of the light aspect - is something that is meant to be ‘eaten’ by black holes.