Faller R

R is a Faller whose true name and identity are unknown. He traveled alongside escaped criminal Zero before the two were separated near Oreburgh City. After being captured by and escaping a faction of the Aether Foundation, no one has seen nor heard from him.

Personality
R is stubborn, strong-willed, optimistic, and a bit gullible. He also tends to be a bit reckless and independent, sometimes rushing ahead before thinking if he considers the situation urgent enough.

On the Run
R awoke in the Sinnoh wilderness with no memory other than the first letter of his name. His left eye was in pain, covered by a bandage, and his clothes smelled faintly of smoke. A very brief attempt to remove the bandage quickly told him it was a bad idea, so he didn't. Dazed and hurting, he could barely sit up. But it wasn't long until someone came to join him in that wild shelter - a man with white hair and gold eyes, who insisted R call him "Z".

Z helped R to recover as well as he could, but without a real doctor, he could do nothing for R's eye. After a few days, Z tried to part ways with R, but R refused to leave, wanting to repay Z for his help...and afraid of being alone.

Thus began R's life on the run with a wanted criminal. They mostly avoided cities and towns, but R was useful for going into towns for supplies, as no one would recognize him. In return, Z helped to teach R to speak and read Sinnohian, as his amnesia had wiped his language abilities. Having literally no one else in the world to turn to, R was loyal to Z and wanted to help him escape the police.

Unfortunately, R's Faller energy attracted a Kartana, and its pursuit of them drew the attention of Aether. Aether sent a small faction to Sinnoh in order to track down both the Ultra Beast and the Faller, and when they realized the Faller was traveling with a wanted criminal, they notified Sinnohan police as well. Wily as they were, Z and R managed to evade Aether and the cops for quite some time.

A Hint of Memory
It all went wrong when the two of them stopped near Oreburgh City. There was something about this place that drew R to it, some part of him that knew this place was connected to his past. So, despite Z's warnings, he snuck into Oreburgh at night. The next day, the media was abuzz with an unexplained phenomenon: many of the Oreburgh Museum's fossils had somehow been revived overnight, despite none of the fossil revival staff being present at that time. Aether kept the other part of the event out of the public eye. They successfully captured the Faller, R. Z, seeing the chaos that night, had fled, leaving R behind. The police continued to pursue Z, and left the Faller to Aether.

Aether treated R's eye, but could not save it, as it was infected with an unknown fungal substance. They assured him that they were looking into his past and planned to bring him home once they figured out who he was. They also told him of Z's crimes, and informed him that Z was not worth his loyalty. He stayed with Aether for quite some time, not hearing anything about his friend's status, and refusing to give them any information he knew. Thus, a legal battle over R's fate broke out between Sinnohian police and the Aether Foundation. The police wanted R to be punished for aiding a wanted fugitive, but Aether simply wanted to find his home and return him there. R hardly paid attention to it all. He just wanted out of this place.

Escape
Eventually, he got his wish. The Aether faction of Sinnoh was infiltrated by a mysterious Trainer and several unknown Pokémon. They took nothing but a few artifacts that had fallen with R out of the wormhole...and R himself.

R has not been seen since, and nor have his abductors.

Familial
None of R's family is known.

Romantic
R has never had a romantic partner, to anyone's knowledge.

Zero Magna
R has been shown to be loyal to Zero in return for saving his life. Even Aether's attempts could not dissuade R from the belief that Z was good at heart.

Hera (Female Heracross)
This very-creatively named Heracross is protective of R, and by association, Z. She was not caught in a usual fashion - R simply came after her because she looked strong, with no plan at all and no Pokémon to battle her with. He simply threw empty PokéBalls at her until she felt pity for him, and admiration for his stubborn will. She then allowed herself to be captured. After R ran off and got himself captured, she stayed with Z, knowing R would want her to do so.

Trivia

 * R has the vague memory of owning a Pokémon before his amnesia. While he remembers little about it, he believes that it "came from a rock", implying it was a Fossil Pokémon.