Beware the Batman Guest cast, played by Robin Atkin Downes Episode 1x17: Monsters (Sep 7, 2014) Episode 1x20: Doppelganger (Sep 28, 2014) Episode 1x22: Hero (Sep 28, 2014) Episode 1x24: Epitaph (Sep 28, 2014) Episode 1x25: Twist (Sep 28, 2014) Episode 1x26: Alone (Sep 28, 2014)