Board Thread:General Discussion/@comment-26955524-20161101234831/@comment-28345522-20161104163404

73.Anon.52 wrote: Arkos didn't come out of nowhere... it was literally Pyrrha's introduction to the series... introduced while Jaune said "where will I find another quirky red-head?"(about Ruby, not the exact wording, but I'm too lazy to bother getting the quote at the moment)

If you were just watching to watch the show and not really pay attention, it'll sneak up on ya. It happened to me too cuz I didn't pay attention to anything until halfway thru Vol. 2. Then I rewatched the series and saw it was there from the very beginning.