H.I.V.E. (Arrowverse)

H.I.V.E. is an organisation of highly trained soldiers led by Damien Darhk. They first appear in the premiere of the fourth season of "Arrow".

Arriving at Star City
While they are operating in Star City they are dubbed Ghosts by Team Arrow because after their hits they disappear without a trace. At first expecting to be up against a successful group of criminals who commit bank robberies and jewel store heists, Team Arrow quickly realises that there is more to the Ghosts than initially thought. This suspicion stregthens when the Ghosts manage to steal a bomb, despite the efforts of Team Arrow to stop them.

After Damien Darhks arrival at Star City, the Ghosts start targeting the city officials that rule the city in the absence of a mayor. The attack of the Ghosts leads to the death of the District Attourney, the City Controller and the Head of Emergency Services as well to the attempted murder of Quentin Lance who survived the attack.

They were dubbed Ghosts because after their hits they disappear without a trace. If any of them gets caught he commits suicide by taking cyanide hidden in a false tooth. The police and Team Arrow are both unable to stop them or locate their hideout which leads to Oliver Queen's return as the Arrow.

When Team Arrow is able to locate the Ghosts hideout, they overhear a speach of Darhk who tells his men that their group is only as strong as their weakest member. He then severely wounds the agent who was in charge of the bomb heist which was almost foiled by Team Arrow. Team Arrow then attacks, taking out many agents before being interrupted by the arrival of the police. Before fleeing, Oliver is told by the wounded agents that the Ghosts plan to blow up the Star City Central Station with stolen explosives.

The explosives are hidden in an incoming train, along with the Ghosts leader Damien Darhk. The Arrow's arrival on the train leads to a fistfight between him and Darhk which ends with Darhk fleeing the train after having been shot in the back by Diggle. Arrow and Diggle save the station by blowing up the train while it is still out of town.

When back in the headquarter, Team Arrow dicussed the threat Darhk poses. When Oliver recounters what he was told of Darhk by Ras al Ghul, Diggle realises that the Ghosts are in fact H.I.V.E., the organisation responsible for the killing of his brother. However, he doesn't share this information with the rest of the team.