Though Miss Murray is the official leader of the group, her colleagues know little of her background save that she divorced her husband following some scandal. One may wonder at first what qualifies a former schoolteacher to be placed in charge of some of the most dangerous men in the empire. However, circumstances reveal her to be highly intelligent, resourceful, and level-headed in tight situations. She's also not the slightest bit intimidated by her colleagues, men as notorious as Nemo and savage as Hyde; she bosses them around with impunity. She's quite concious of the fact that she occupies an unusual position of authority for a woman; and she gets very testy if she feels that her teammates are leaving her out of the loop or not taking her seriously.

Once a legendary colonial explorer and adventurer, Quatermain has fled the public eye and fallen to opium addiction -- perhaps as a way of quelling his cravings for the mystical drug taduki. Miss Murray digs him up in Cairo and presses him into the service of his country once more. At first he is reluctant; but it soon becomes apparent that some spark of the old heroic Quatermain yet remains in him. When he makes the effort, he can be pretty capable and resourceful; and he's especially suited to action-hero tasks like barging in and waving large guns about. He and Miss Murray bicker constantly, and he never misses an opportunity to gripe about her with their colleagues -- giving one the impression he's rather infatuated with her.

A former Indian "mutineer" against the colonists, Nemo became so disgusted at his countrymen's surrender to the English that he ran off, built his own high-tech squid-shaped submarine, the Nautilus, and became an infamous techno-pirate.  Apart from adventure and the opportunity to level machine guns at Englishmen, one can only guess at Nemo's reasons to be working for the empire he once hated.

Despite his staggering genius, Nemo for the most part prefers to keep his own counsel, save for the occasional ominous remark. Among his teammates, he suprisingly relates best with ex-colonialist Quatermain.

A lot has changed since upstanding scientist Dr. Jekyll first created a formula that would split his persona in two.  His "dark" half, Hyde, has grown huge and powerful, to the point where he no longer needs a formula to trigger his transformation.  At the same time, Jekyll himself has wasted away into a skinny, pale, nervous wreck.  He goes around looking as if he feels that any moment something big and nasty could leap out at him.  And in a sense, he's right.

Whenever the group is in a dire situation, Hyde can be relied upon to show up and tear things to pieces. Despite his beastly strength and savagery, he is hardly a brainless brute; he knows what's what. And he's clever enough to conceal his ability to see Griffin, in case it should prove useful in the future. Among his teammates, the only who seems to know how to handle Hyde is Miss Murray.

Griffin is a complete sociopath. He also happens to be invisible. This means he gets away with molesting schoolgirls, killing random policemen, and making snide remarks about his collegues, all with a smirk across his invisible face. His teammates don't like him, but are forced to find him quite useful in situations which require stealth and a lack of compunction.