-will appear in episode 6 when the Legends travel to 2046
-connor hawke will also be in this episode but NOT as his son
4x14 Episode Description:
"Code of Silence": SECRETS AND LIES — Oliver (Stephen Amell) and team uncover HIVE’s plan to take out Team Arrow once and for all. With HIVE’s next attack imminent, Lance (Paul Blackthorne) wonders if Donna (guest star Charlotte Ross) is safer without him in her life. Meanwhile, with the wedding fast approaching, Oliver begins to feel guilty that he hasn’t told Felicity (Emily Bett Rickards) about his son. (#414). Original airdate 2/17/16.
-Diggle will get a modified/upgraded helmet around the time he and Lyla cross over to The Flash in episode 15.
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