Board Thread:Spoilers!/@comment-27060727-20160225003107/@comment-5899967-20160508111327

There's no need for this "ultimate end" plot device to assure Robin is 100% dead, he simply goes directly to heaven/elysium, because the Underworld is the only place between life and death, and it's extremely hard to come back even from that place. Hook will probably be resurrected because Zeus wants to thank Emma and the others for helping the souls and maybe defeating his brother, so he will go Shenron and grant them a wish.