Acnologia (アクノロギア Akunorogia) was a Dragon and the divine guardian of the hidden land Montes Secreta, whose name was taken by the Dragon Slayer Acnologia as an act of spite towards his race's evil doings.
Acnologia was an off-white colored dragon with intricately designed fur and yellow eyes.
Before returning as an evil Dragon, he was a kind-hearted dragon who looked over his domain of Montes Secreta.
After hearing rumors of humans and dragons in fight, Acnologia left to investigate the situation, only to return to be convinced that humans are petty and conniving, which led him and the other Dragons to destroy and murder the people of Montes Secreta.
|Five Dragon Gods||Aldoron • Ignia • Mercphobia • Selene • Viernes|
|Deceased||Acnologia • Acnologia (Dragon) • Animus • Atlas Flame • Belserion • Dark Dragon • Grandeeney • Igneel • Irene Belserion • Levia • Metalicana • Motherglare • Rock Dragon • Scissor Runner • Skiadrum • Weisslogia • Zirconis • Zirconis (Spirit)|
|First Generation||Acnologia • Gajeel Redfox • Irene Belserion • Natsu Dragneel • Wendy Marvell|
|Second Generation||Erik • God Serena • Laxus Dreyar|
|Third Generation||Future Rogue Cheney • Rogue Cheney • Sting Eucliffe|
|Fourth Generation||Quartum Army|
|Fifth Generation||Black Dragon Slayer Knights • Georg Reizen • Kiria • Madmole • Nebaru • Skullion Raider • Reiss|
|Deceased||Acnologia • Future Rogue Cheney • God Serena • Irene Belserion • Reiss|