In Chapter 7 of Destiny War, there are descriptions of multiple types of strange creatures that the Energized Protodermis Entity had created. They are described as such:
"Helryx spotted… things skulking among the rocks. They weren't Matoran, or Rahi, but looked like something in between."
"As the passage widened again, Helryx saw more creatures. These obviously were Rahi beasts, but not like anything she'd seen before. They were short, pale bipeds, with large yellow eyes and spindly arms and legs. They backed away and moved to the side as she and her ally passed."
My questions are as follows:
1) What were these creatures supposed to be?
2) What were they transformed from?
3) If none of the above apply and instead they're a reference (literary, film, etc), what was it?