The Endbringers are monstrous beings that take turn attacking locations around the globe to cause as much damage as they possibly can. Apparently unkillable, the Endbringers retreat to their respective domains to heal after they have sustained sufficient damage, only to attack again months later.
“ The Endbringers were something we all understood. A fact of reality, something that touched everyone, struck a chord of fear in cape and civilian alike. ”
According to Tattletale’s power, the Endbringers were never human and have no vulnerable organs. Rather, the Endbringers appear to be made out of some type of a crystalline material. In addition, they consist of about 200 layers in the main body and 33 in the limbs, each one approximately twice as hard as the previous one. These layers surround its core, the only part of its body that is actually vital.
An Endbringer's skin is "hard as aluminum alloy, but flexible"; and it's strength, toughness, and healing factor increase exponentially. 3% deeper in toward core of arms, legs, claws, tail, or .5% in toward core of head, trunk, neck, tissues are hard as steel. The tensile strength of the material roughly doubles with each layer, every 0.5% of the way towards the center of his body and every 3% of the way toward the center of their extremities; Wildbow has confirmed  that "extremities would take 30 trillion atmospheres of pressure to damage." The core of an Endbringer would require around five hundred and sixty novemdecillion MPA of pressure; in practice, only parahumans capable of breaking the laws of physics can seriously harm an Endbringer.
However, a concentrated attack with enough force to destroy the surface of a planet would be sufficient at killing an Endbringer in one shot. While even an attack of that magnitude would not destroy all layers of the Endbringer body, enough energy to obliterate it instantly would be transmitted into the core, resulting in a 'definite kill'. In theory String Theory's Driver weapons pose a significant threat to the Endbringers. As a consequence they carefully plan their appearances as to eliminate any possibility of facing her in combat.
Due to their density, Endbringers are immune to most teleporters. They count as living matter for the purposes of the Manton Effect.Endbringer cores employ space-warping that interferes with some powers. When they take damage they leak a thick ichor-like substance, suggesting a non-standard cardiac system. Their nervous system is also foreign enough to prevent body control powers from working. They regenerate quickly as well, even in the middle of a battle. The deeper layers regenerate faster because the material from the intact layers expands to fill in any damaged or missing areas.
"The outer shell, the concept, the execution, they’re tapping into religious metaphors. The devil, the serpent, the angel, buddha, mother earth, the maiden, each connected in turn to fundamental forces. Flame, water, fate, time, earth, the self. Things deep-seated and fundamental to their creator’s belief system, because that’s how the passengers interpret our world. Through us. But deep down? Beyond that surface, beyond the basic programming that drives them to do what they’ve been doing for thirty years? It’s the passenger’s brush strokes"-Tattletale on the Endbringers 
|1992-12-13||Behemoth||Marun Field, Iran|
|1993-07-06||Behemoth||São Paulo, Brazil|
|1994-03-26||Behemoth||New York, USA|
|1996-01-03||Behemoth||Johannesburg, South Africa|
|1997-04-23||Leviathan||Busan, South Korea|
|1997-09-30||Behemoth||Buenos Aires, Argentina|
|2011-05-15||Leviathan||Brockton Bay, USA|
|2011-07-26||New Delhi, India|
|2011-11-25||Simurgh||Flight BA178, International waters North Atlantic|
|2012-08-15||Leviathan||Rio de Janeiro, Brazil|
|2012-10-10||Tohu Bohu||Bucharest, Romania|
|2013-05-17||Tohu Bohu||Los Angeles, USA|
The Endbringers killed numerous people and wiped out several notable heroes. This removed potential and luminaries leaders and idealistic parahumans willing to sacrifice themselves for the greater good. Possibly leading to a more cynical population. They have caused demographic and political shifts and environmental degradation on a scale not seen outside natural disasters. Conversely without the Endbringers there would be fewer parahumans than there would otherwise be, nor would there be as many coordinated Cape teams.
Because of the Endbringers and their attack patterns over being stationary targets and occasional attackers as originally planned, The Fallen rose. Thanks to their coordination with each other the Endbringers are able to maximize their impact.
|Heavy Spoilers read at your own risk|
Behemoth — also known as "Hadhayosh" and "Prathama" — appeared on December 13, 1992. It has the ability to manipulate multiple forms of energy (electrical, thermal, kinetic, and etc.) while bypassing the Manton Effect.
Leviathan — also known as "Jormungand" or "Jörmungandr". It has macro-hydrokinesis, speed, and a water "afterimage" that follows behind it and moves as fast as Leviathan is.
The Simurgh - also known as "Ziz" - appeared in 2002. It has psionic abilities, precognition, and the ability to draw on Tinker powers around it in order to build its own Tinker devices. The Simurgh is known to adjust the events in places it attacks to set up the survivors to be "walking disasters" that happen days, months, or even years after.
Khonsu appeared in Japan in 2012. It has the ability to create circular fields that trap people inside. People from the outside see the field as increasing the speed of time, but it passes normally to those inside. It also has world-wide teleportation abilities.
Tohu and BohuEdit
Tohu and Bohu appeared in Bucharest in 2012. Bohu manipulates the battlefield - setting up traps for defending parahumans and manipulates the area in a set pattern. Tohu chooses three capes and then copies their powers to defend its "sister" Bohu.
Had Cauldron ceased to exist soon after killing Eden, the Endbringers would not have existed. They began "acting funny" after Eidolon's death, and Tattletale speculated that he may have created them, possibly as an excuse to "flex his abilities to their fullest". She was 60% sure of this.
- A Popular Fan Theory among some of the Worm fandom is that the Endbringers were once Parahumans, who either snapped or couldn’t handle their powers, gotten out of control, transformed into gigantic monstrosities. With the full reveal of their origins this theory has been relegated to fanficton.
|Members||Behemoth • Leviathan • The Simurgh • Khonsu • The Twins (Tohu • Bohu)|