De acordo com Mac Walters , o principal escritor de Mass Effect 3:
Então o que o jogador luta em Mass Effect 2 é apenas o "núcleo" de um Reaper - e o IIRC faz sentido porque é muito menor que os Reapers que vemos em outros pontos nos jogos.The exterior of the Reapers does follow a similar pattern, an efficient design for the purpose they were created for. However each Reaper is created from a unique species, and as we saw at the end of Mass Effect 2, the core of each Reaper is designed in the likeness of that species.