(EN) Charles Pulliam-Moore, A Brief History of DC Comics' Black Supermen, su Gizmodo, 12 aprile 2021. URL consultato il 20 luglio 2021.
«Unexamined as Vathlo's existence has gone for the bulk of DC Comics' history, its creation immediately raised a number of questions about Kryptonian society that Superman comics, and much of the fandom, have never been particularly keen on asking. By presenting Vathlo as an island full of Black Kryptonians without explaining what they were doing there, Giant Superman made it impossible not to regard it as being a reflection of our reality's history of racial segregation, even if that wasn't DC's express intent.»
