Fusengershadow

General Information
Technically not a native to the Pokemon world, Shadow is an extra-dimensional superhero known as a Fusenger. He possesses great technical skill, as he was able to retrofit his transformation device into his Pokegear. He also possesses both Dark-type magic and Aura abilities, which he lovingly refers to as his Dark Aura. He alleges his Dark Aura is strong enough to affect Psychics, although it's unknown if it's true or if he was just claiming that to keep then-single Will from hitting on him. He claims to have a love interest in his home dimension yet makes a habit of complimenting females, especially on their looks, justifying it as a courteous and simple compliment. This has on a couple of occasions brought him in conflict with the father of the Fuchsia Gym Leader and Elite Four Member Koga. He loves his Pokemon as if they were his own family, especially Arachnia, who prefers to ride on his head. He also has a sweet motorcycle, the Chaos Rider Cycle, which he uses for general transportation.

Entering the World
Upon arriving in the Pokemon world, he became a normal trainer, battling through Sinnoh, Johto, and Kanto and befriending his Lucario, Umbreon, and Noctowl, whom he named after characters from the first-generation Transformers series. He originally stayed in his own home dimension, keeping his Pokemon in the computer while he left to do other things (such as stream videos and games or do his necessary work in his own dimension), but as he found himself spending more time in the Pokemon world, he began to interact more with the gym leaders therein.

Making Friends
His first friend in the Pokemon dimension was the Fuchsia Gym Leader Janine, whom he met participating in an obstacle course with other trainers, Gym Leaders, and Elite Four members. It was here that he also met Marley, Lance, Blue Oak, and Phoebe, just to name others (he and Blue initially butted heads but have not been antagonistic to each other since). He stayed mainly around the Fuchsia area a lot, especially during the events that lead to him befriending a newborn Spinarak (born of Janine's Ariados and an abandoned female Ariados who'd taken over her house). Shadow nicknamed the Spinarak Black Arachnia (also after a Transformer, this time from the Beast Wars era), and as soon as she was able to leave her mother, Arachnia joined Shadow as an official member of his family.

The Dimensional Void Saga
Not too long after that, Shadow decided it was time to have a base of operations, if not a home, in the Pokemon world. This was especially made imperative when, while he was training his dimension-hopping abilities to allow him to surprise-kick like Janine's father Koga, his powers started to go out of control. Also, he needs a nice secluded place to train, as he was trying to find ways to seal the suddenly appearing dimensional voids. He found himself a house with land just outside of Fuchsia, which he lovingly dubbed Umbra Manor, just as he discovered that the dimensional voids were apparently caused by a dimension called nullspace and its null energy. (During the investigation, he overexerted himself sealing a void he created for the purpose of releasing trapped Pokemon, and in his exhaustion, his body somehow changed from a 15-year old form to his proper age.) He remained there to escape growing public dissent against him, trying to figure out a way to fix the voids and eliminate nullspace. Despite knowing the dangers of null energy firsthand (his own experiences made him frantically contact his reporter friend in the Pokemon Press to convince Devon and Silph to stop their experiments), he traveled into nullspace himself so he could neutralize the null energy. At last report, he seemed to succeed, but he was trapped in the Distortion Dimension.

His Pokemon
Shadow's Pokemon have a habit of picking up his Pokegear (or his spare) whenever he is out, and through them, a few things have been discovered about each of his main four.

UltMagnus
Ultra Magnus (or UltMagnus, generally shortened Magnus) is a Lucario that Shadow met up with in Sinnoh. His nature and his ability are both unknown, but what is known is that he is generally quite intelligent. Unfortunately, as mentioned by Shadow himself, he is a little bit perverted, as he has been known to search for pornography (specifically of Gardevoirs) and ogling attractive human women (even once stating he wishes he was human sometimes).

RodimusPrm
Rodimus Prime (or RodimusPrm, generally Rodi) is an Umbreon also originally from the Sinnoh region. He, like his "brother" Magnus, is of unknown nature, but his ability is Synchronize. He is more calm and laid-back than his counterpart, and generally mute unless he swipes the Pokegear away from Magnus. He is very protective of Arachnia, whom he sees as his little sister even more so than Magnus or Laserbeak. He doesn't know who his parents are, but he considers Shadow to be father enough.

Laserbeak
Laserbeak is a Noctowl that Shadow caught while working through the Johto region. She is of Docile nature, and she is known to be an Insomniac. Because of that, Shadow keeps her in her Pokeball overnight. She is very much the mother hen of the group, keeping Magnus in line and watching over the young Arachnia. She is incredibly willing to help people, as evidenced with willingly assisting Janine in transporting people to Fuchsia for her obstacle course. As a result, she is Shadow's most trusted Pokemon.

Black Arachnia
BlackArachnia (BlkArachnia or Arachnia) is a young female Spinarak. She has an Enthusiastic nature, but her ability is unknown. Shadow met Arachnia not long after she hatched, and despite Shadow's initial arachnophobia, she eventually crawled her way into his heart (and onto his head). She still prefers to roost on Shadow's head, as that is her way of hugging "Shadow-sama". She can be rather sassy at times, especially to her Mama-dos, but for the most part she's simply lively and energetic. She has a special bond with Rodi, although whenever the Pokemon travel by themselves, she sometimes latches onto Magnus' head as if it were Shadow's.