Always being overlooked compared to Yonalys, Ragnoroma never had the best relationship with Notan. Even in the ancient times of Gado, Yonalys was still more popular. Despite her hidden jealousy towards her mother and sister, they still had a better relationship than their current one. Everything was tolerable until her and Notan got into a huge argument about Yonalys. Being young and emotional, Rag ran away from home. She mistakingly ran close to an early settlement made by humans. They weren't completely knowledgeable of all of the Pokemon in Gado at the time, and were extremely wary of them. Seeing Young Rag's emotional state at the time, they thought she was going to become hostile. They attacked her, trying to drive her away. With Rag not being in the greatest mindset, and also still developing, they were able to kill the young legendary.

Ragnoroma's festering anger and bitterness resurrected her before Notan could. She was transformed into the ghosty and dark being she is now, apart from her form that resembled her family more. Now recently awakened and enraged, she sought out other ghost types to help her take revenge on the town that killed her. This is when she found out she could resurrect pokemon, resulting in all of the ghost types in Gado. They burnt down the settlement that killed Ragnoroma, not bothering any other human settlements. She claimed the now ruins of the town her home, deep in the forests of Gado. She stayed away from Yonalys and Notan until she felt that Notan's rage from her death was getting out of hand, which was after 500 years of the ice age. Her mother's rage made her basically freeze the entire region, making it cold and harsh, like how she felt. Rag eventually went to Notan's mountain to unleash her remaining anger on her Mother in a violent attempt to get her to stop. It did work, but seeing her daughter's violence not weakening, Notan and Yonalys had to imprison Ragnoroma for centuries to quelch her rage. Notan eventually brought her out of her void-like prison, at the cost of the threes relationships unfortunately.

Years among years after her death, the region of Gado was still calm. More humans have settled in, and have gotten more comfortable with the pokemon around. Ragnoroma had gotten used to her new forme, still being reclusive to anyone but other ghost pokemon. Everything was alright until Rag and Yonalys got into another huge argument, with Rag threatening Yonalys's life. When Yonalys seemed to run away, she thought the argument was over, with Rag starting to calm down. Until Yonalys showed up with Meloetta, as an attempt to calm Rag down. She was immediately infuriated again, seeing how Yonalys saw her as a child who needed some "babysitter" for her anger. She got so enraged she went on a rampage, accidentally destroying a village in the process.

The surviving humans of the village didn't see that it was Ragnoroma that mistakingly destroyed their town, and blamed it on the surrounding wild pokemon. They thought the pokemon of the forests were upset at how advanced that village had become. They decided to push back, cutting more trees down, eventually provoking the wild pokemon into retaliating to protect their land. After a long back anf forth of petty fights, it blew up into a full war, taking place in the heart of Gado. None of the legendaries took a side in the war, Notan telling them that it would be unfair for both sides. They would watch the battles on top of a mountain, seeing how the war would play out. Ragnoroma, however, still wanted to something seeing as she unintentionally caused the whole thing.

Sensing all of the Pokemon in need of help, a certain one stuck out to her. She visited Diancie in a nightmare, after she was attacked and scarred. She offered her the forme she now has to protect herself and the Pokemon. She never knew Diancie before this, and basically helped her so that she could help Pokemon indirectly. Diancie accepted the offer, immediately going off to fight in the battles. Ragnoroma didn't help anyone afterwards, watching the war with her mother and sister until it ended. After the war, she caught wind of the general of the human side, the very one who scarred Diancie, Orren. She blamed him for all of the pain that was caused, stalking him for years. The stalking drove Orren mad, eventually leading him to seek out Rag to kill her, just as she wanted. They fought, even though Ragnoroma could've killed him instantly, but she respects a worthy opponent. After their battle she killed Orren, resurrecting him into a Pokemon, renaming him Ormaxim. She wanted to show him what it was like to be a Pokemon, and to teach him to not be so entitled. Giving him the chance to earn his rest.

Ragnoroma still resides in the ruins where she once was killed, harboring countless of other Pokmemon, ghost or not, that were also mistreated by humans. She keeps them safe with her, attacking any human who enters. Ormaxim also lives there as well, with Ragnoroma teaching him empathy towards the Pokemon there, hoping to change his mindset. She still doesn't interact with Yonalys or Notan much, unless they are fighting. Her and Yonalys often get into fights, with both being hard-headed and stubborn about their beliefs. They still do care about each other though, neither of them can really show it with the constant arguments. Ragnoroma is mostly seen at night, walking around as her flaming and glowing patterns faintly light up the darkness she also exudes. Although simply seeing her is seen as a sign of impending death or doom to the people of Gado, often appearing in the nightmares of anyone who get too close to it. Therefore, there has been a rule set in Gado to avoid going out at night unless you have a bright flashlight to keep Ragnoroma at bay. Despite all of the hatred surrounding Ragnoroma, she is still a respected legendary, having art and costumes made of her and featured in Gado's festivals.