The purpose of the Brotherhood was to traditionally observe and adventurously partaken in historical events which shape worlds. Maintaining the belief that there are fixed points in time where events have had such a long-standing impact on the timelines that no one, not even the Brotherhood, dared interfere with the natural progression of the universe in fear of the colossal repercussions. The Brotherhood have many factions under their rule, and the one which presides over Earth, are called "The Wanderers" being a team run by thrill-seeking, daredevil assassins. All of whom are selected (by Peak) for being legendary Assassin's or warriors of their chosen era.
The Three Timeless Tenets
The Wanderers naturally hold a great deal of power, due to being time travelers, and traditionally the Brotherhood have held three tenets which restrict, and preserve, the integrity of not only the universe, but the preservation of the timeless order itself. These go as following;
"Your actions must never alter fixed points in time - Direct, or indirect, in doing so, you endanger yourself, and the Brotherhood"
"Your actions must never bring harm upon the Brotherhood, through action, or inaction, you must preserve our family"
"Whilst partaking in historical events, do not cause unnecessary harm. We are promoters of peace, not the harbingers of death"
The three ironies of the Brotherhood; the ironies did not undermine the Brotherhood. Rather, they demonstrated the way in which they embrace contradiction, "that one may be two things – opposite in every way – simultaneously." To grow stronger, and overcome.
"The Brotherhood seeks to give ultimate freedom to it's members; but require obedience to rules"
"The Brotherhood seeks to preserve itself; yet seeks out dangerous enemies for enjoyment"
"The Brotherhood seek to promote universal peace; but commit murder"
These are timeless tenets, and the Brotherhood of Assassin's has existed in many forms over many generations. The Brotherhood of Earth, is governed by one man, Peak, or otherwise known as, the Oncoming Storm. A man who fled his reality in the search of adventure and enjoyment, cultivating his daring disposition and lust for excitement, only to end up altering a timeline and turning a world from peace to war; he was punished by the Brotherhood. Only to end up joining the ancient creed, and beyond expectations...Lead the earth based Brotherhood, and from that day forward...
Hiding in plain sight like the elusive chameleon, The Voyager is The Wanderers amazing means of transport. Looking like a humble ship from the renaissance era, it actually houses an elaborate interior, taking advantage of the technology know as hammerspace, the ship is able to maintain it's relatively small size, whilst the interior is actually a separate dimension, and accommodates many teams members and wonderful pieces of technology which even the best scientist on Earth would fawn over at a mere glimpse. The Voyager is never in one place for more than a few hours, constantly shifting from place to place via teleportation (using technology stolen by Peak from his originating world) or simply sailing, the ship maintains the look of a sailing ship whilst on earth to be inconspicuous, whereas, as some of the team have suggested, why not use a spaceship? This would be too overt, and, due to The Wanderers being part of the Brotherhood of Assassins, they have to keep their activates somewhat clandestine. The vessel is their means of time travel.