Dragon Slayer Magic (滅竜魔法 Metsuryū Mahō): As one of the first humans who entered the Dragon Civil War, Acnologia was also one of the first Dragon Slayers brought into existence. Over time, however, as he slayed many Dragons, he himself was, eventually, turned into a Dragon due to the overuse of his Lost Magic, though he retains the ability to shift back into human form at will. It is currently unknown exactly which element Acnologia employs in his casting of Dragon Slayer Magic, however his Dragon Slayer Magic grants him the ability to reap the souls of Dragons, leaving them in a half-dead state.

 

​Dragon's Roar: Like all Dragons and Dragon Slayers, Acnologia can perform a Dragon's Roar, incorporating his respective element into the attack. While which element Acnologia employs is currently unknown, the blast was powerful enough to "completely eradicate" Tenrou Island and imprint a giant crater into the ocean.

 

Flight: In his Dragon form, Acnologia possesses the ability to fly, using his large wings to travel great distances, maneuver high up in the air, and perform aerial assaults on those below him.

Immense Durability: Acnologia is capable of shrugging off attacks from very powerful Mages, such as Erza Scarlet,Laxus Dreyar and Mirajane Strauss. Even attacks from Natsu Dragneel, Gajeel Redfox, and Wendy Marvell, who all employ Dragon Slayer Magic, the Magic that is renowned for its legendary ability to slay Dragons, had absolutely no effect on Acnologia. Not even attacks from Dragons can harm Acnologia as shown with the Black Dragon taking the full force of Igneel's massive fire breath attack and emerged unscathed as if nothing happened.

 

Immense Strength: Given his immense size, Acnologia is easily capable of reducing a substantially-sized area to rubble by simply landing on top of it. As a testament to his immense strength, Acnologia can engage in a head-on physical confrontation with Makarov in his Giant form and easily gain the upper hand.According to Gildarts Clive, despite the amazing feats Acnologia performed on Tenrou Island, the Dragon wasn't using the same level of strength as he was during their brief confrontation. Rather, Gildarts noted that the Black Dragon was toying around with every last one of them. Acnologia is also much stronger than he is assumed to be, as even after apparently going toe-to-toe with Igneel in combat, Zeref comments that Acnologia is still waiting for someone to give him a true, challenging fight, implying that he was possibly holding back in his bout with the Fire Dragon King. Zeref has also stated that Acnologia could rule the world with his power, yet elects not to for whatever reason.

 

Manipulation Immunity: According to Future Rogue, Acnologia is immune to Dragon Supremacy Magic.

 

Shapeshifting: Acnologia, contrary to the legends surrounding him, did not entirely transform into a Dragon and has retained the ability to enter and exit his human form at will.