Doesn't make sense putting Garuda in fall. Seeing leaves fall to the ground is a sign of death. Going back on Greek mythology, Hades wife Persephone, goes to the underworld signalling death(fall/winter) until spring when she leaves the underworld bringing warmth and life back into the land. So, I think Hades fits this perfectly since Halloween is also a festival for spooky stuff thus fitting Hades into this time frame even more. Anyways, whose to say this would actually happen lol