The Thanantos Guild operates in the same way as the League of Assassins do; prior to the league being disbanded by Nyssa al Ghul.
Malcolm Merlyn created the Thanatos Guild as part of the League of Assassins, sometime after he became Ra's al Ghul; prior to the league being disbanded by Nyssa al Ghul. Many of Malcolm's loyalists were recruited into the guild, including his second-in-command, Athena.
However, following Malcolm's death on Lian Yu, Athena assumed leadership of the Thanatos Guild.
- Athena (leader, former second-in-command and field agent)
- Malcolm Merlyn (founder, leader and field agent; deceased)
- Team Arrow
- Nyssa al Ghul
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