It is obvious that Skull Knight is Half Elf or something just like Pikaf. As you know the previous owner of the Berserker armor(SK) "died" as stated by Schierke. But I believe that he didn't die but was on the verge of death and had to be transformed into a Half-Elf (just like Pikaf) so that he wouldn't die. This would explain why Puck felt Skull Knight was a fairy/elf. And to add to that, do you remember volume 9 when SK was introduced a year before the Eclipse? He predicted that Guts would be in the abyss of despair with a broken sword, clearly he predicted what would happen and this is not the only instance of him predicting the future. Now in vol. 37 Schierke states that there are elves who can discern fate over time.... this would explain SK's ability to predict the future Please share your thoughts on this.