Wow, I honestly didn't even think about that. Now that you mention it, that could also imply that he has some ties to the Void, and perhaps hexcrystals do as well. I'm not saying that he was infected by the Void; at least not fully. He has extreme regenerative abilities, as is common among the Voidborn. In addition, he also has an incredibly high pain threshold (if such a thing exists in Mundo's case) and an unbelieveable amount of strength. However, if we look at Jax, a conformed Icathian, we see that he, too, has great physical ability (also, they're both purple in skin color). A common plot devise comes to mind. That plot devise goes as follows: A civilization is experimenting with something they do not fully understand. This will usually lead to something commonly referred to as "the accident." This is usually an explosion or the outbreak of a disease. In the Icathians' case however, they most likely tore open a hole in the veil separating the Void from Runeterra, causing a massive spead of Void magic among its citizens, but not nearly to the extent of Malzahar or Kassadin, since it was spread over such a large area. This might also lead to the release of Cho'Gath (see my theory about the Void, "Void=Cancer?", to see why I think it's him and not the other Voidborn #yesthisisashamelessplug). This was quickly sealed up one way or another, but the damage was done. Cho'Gath made short work of the citizens, save for Jax and the ancestors, or maybe even parents, of Mundo. Seeing as Jax is still alive today, we can assume that the Void gives those infected, as well as the Voidborn, a lesser extent of immortality. Mundo's ancestors made there may as far as possible from Icathia. They eventually, possibly through generations, found there way to Zaun. By this time, thousands of years have passed; enough time for Icathia to fall into myth and legend. Finally, Mundo's conception comes about. The combination of Void energies and the chem fumes would be more than enough to grant him irreparable birth defects. For whatever reason, they left him at that asylum, either out of concern, necessity, or want for self-preservation. As for hexcrystals, the Void most likely managed to have some sort of reaction to the native magics, creating the different powers of the hexcrystals. O_O ... Okay, that comment of yours was a rabbit hole if I've ever seen one. Honestly, thank you so much for this trip. Also, love the user name #relatable #idon'tnormallyusehashtagstodescribethingsbutifeellikeitsothere