Personal Info:
Real Name: Bruce Wayne
Also Known As: Batman
Place Of Birth: Gotham City, Earth -12, Dark Multiverse
First Appearance: Dark Days: The Casting Vol.1 #1 (2017) Modern Age Villain
Known Associates: Barbartos, The Batman who Laughs, The Red Death, The Drowned, Devastator, Murder Machine, Dawnbreaker
Group Affiliation: The Dark Knights
Base Of Operations: Earth -12, Dark Multiverse
Grudges: The Justice League
Creators: Scott Snyder and Greg Capullo
The Merciless has a genius level intellect, he is an incredible acrobat and one of the best hand-to-hand fighters in the world.
Divine Empowerment: The Merciless has all of the powers of Ares amplified a hundredfold due to his helmet.
Enhanced Abilities: The Merciless has super human strength, endurance and durability.
Energy Absorption: The Merciless is capable of absorbing all of the power of a low-yield nuke without duress.
Summoning: Through his power as the god of war as well as being the heart and soul of his worlds Mount Olympus, The Merciless has power over a great many of its items of interest as well as many of its facilities. He can summon any and all forms of munitions within the divine armoury to his beck and call at will. Such as when he summoned his God Killer sword when attacking a war room summit. Having collected all the coins of the Amazons from the underworld, he can also summon the deceased warrior race to fight by his side at will.
Pathokinesis: The Merciless can infect others with anger and a desire to fight, as well as with a need to worship him.
Mind Control: The Merciless could induce a need to worship him in others.
When Ares created a helmet that amplified his powers a hundredfold, war broke out in the effort to stop him. For two years, Batman and Wonder Woman fought side-by-side just to get close enough to attempt to stop Ares. The two were able to get the helmet off the war god, but at the cost of Diana's life. Batman, driven by grief, put the helmet on in order to take down Ares. Despite his belief that he could keep himself under control, Batman was corrupted by the power and killed Ares. Afterwards, he learned that Diana had only been stunned by Ares. Afraid of what Ares power would do to Bruce, she tried to remove the helmet. However, Bruce was so addicted to the power, he chose to kill the woman he loved rather than risk losing the helmet. With virtually unlimited power and no sense of morality, Bruce went on to wage war on the entire world. Starting with killing only villains, he quickly escalated to killing his fellow heroes when they tried to pull him out of the darkness. Soon no one was left to stop his rampage.
When Bruce's war reached Olympus, his Earth reached the edge of its existence. Minutes before the end, he was approached by a Batman whose very voice, a match for his, was enough to rattle him. This Batman offered him a chance to put his talents to use in the greatest war any universe has ever seen: a war for their survival. Unable to pass up a chance to prove to all creation that his way is the right one, The Merciless joined the Dark Knights.
The Merciless at DC Database
The Merciless at Comic Vine