Personal Info:
Real Name: Barbatos
Also Known As: Bat-God, The Bat, The Bat Behind The Bat, The Dragon, The True Father of Batman
Place Of Birth: Dark Multiverse
First Appearance: Dark Days: The Casting Vol.1 #1 (2017) Modern Age Villain
Known Associates: The Batman who Laughs, The Drowned, Merciless, The Red Death, Devastator, Dawnbreaker
Group Affiliation: None
Base Of Operations: Dark Multiverse
Grudges: The Justice League and Batman
Creators: Scott Snyder and Greg Capullo
Darkness Manipulation: Barbatos is able the ability to create and manipulate darkness or shadows that cannot be penetrated by light and sometimes not other energies either.
Reality Manipulation: Barbatos is able to warp the fabric of reality itself to his whims.
Infection: Barbatos is able to infect others with the power of the Dark Multiverse, whether to send them into a hallucination or to weaken them severely.
Telepathy: Barbatos is a telepath able to manipulate, or communicate with, others using only the power of the mind.
Longevity: Barbatos may or may not be immortal, but has definitely lived since the dawn of man.
In the earliest days of existence, before the Multiverse became reality, a spark of potential created matter and anti-matter. After that, two siblings tasked with monitoring creation came to be. Along with them, though, came a third being known as The Forger. Unlike the others, it was set to watch over creations that would exist in the future. The Forger made its home in the Forge of Worlds, a hidden place inside the sea of possibility that would later be renamed the Dark Multiverse. For eons, it created universes based on the hopes and fears of every living thing. While the most stable universes became part of the main Multiverse, The Forger would dispatch its dragon to destroy the unstable worlds so their energy could return to the Forge and be used anew. The name of that dragon was Barbatos. Eventually, Barbatos' lust for destruction led him to kill his master and steadily corrupt the Forge of Worlds. Because he was no longer doing his job, the unstable worlds persisted beyond their time and became part of the Dark Multiverse.
Eventually Barbatos set his sights on destroying the regular Multiverse. He was able to come to Earth at one point, and when he did, the Tribe of Judas worshipped him as a god. However, he was repelled from the regular matter Multiverse during the Final Crisis. When Batman was sent back in time to the dawn of man by Darkseid with the Hyper-Adapter, he was noticed by Barbatos, who saw the similarities in the emblem that they used. Barbatos decided that he would turn Batman into a portal that would allow him access to the regular matter Multiverse in order to control it.
Barbatos at DC Database
Barbatos at Comic Vine