Zoe Zeppelin is the leader of Special Operations Service (S.O.S.), a role she inherited from her superhero father, Professor. Zeppelin. She has demonstrated enhanced strength capable of inflicting damage even on Zack Overkill, and some invulnerability. It is believed that her powers are derived from the same otherworldly crash site that gave The Black Death his own powers, with Zoe being a possible descendant of one of the original people that investigated the site. However, it is possible that she must consume a secret elixir created by her father to maintain her powers.