Arrow would have us believe he sacrificed himself in the off-screen explosion to save his daughter, but Malcolm is like a cockroach -- he'll never die. Assuming he used one of his extra nine lives, it's possible that Malcolm was able to find the ARGUS ship floating off shore on the other side of the island and pulled it back around to pick up the rest of the bunch; maybe he even saved Black Siren, given that Katie Cassidy will return as a series regular in Season 6. On top of the many, many fight scenes and explosions that dominated the episode, Arrow managed to insert some seriously tearjerking moments into this finale as well.