Basics
Name: Yellow (de Tokiwa Grove / / of the Viridian Forest)
Alias: Amarillo del Bosque Verde / / El Yellow Caballero
Hometown: Viridian City, Kanto
Birthplace: Viridian Forest
D.o.B: March 3, 1995 (♓) // 14 yrs.
Blood Type: A
Height: Around 140 cm, give or take
Weight: ???
Hair Color: Blonde
Eye Color: Dark shade of yellow; brown. Depends on the lighting
Relatives: Parents location unknown; lives with her ‘Uncle’ Wilton.

Personality
Yellow is an extremely compassionate, benevolent, and kind-hearted individual. She can understand the seriousness of a situation and will be serious when needed, or when she thinks it’s necessary. Being the optimist she is, though, she will always look at / try to find the bright side, even in the darkest of days. She believes there is good in everybody’s heart, somewhere, and loves to make new friends. Not to mention that other people always come first, especially her friends. It's probably why most people compare her to sunshine- she just seems to enjoy brightening up people's days! 

She is a pacifist, and will only fight when necessary. She GREATLY dislikes violence, she’d rather make friends and allies than enemies, and will try to in every situation. To add onto this, she’s naive and gullible, leading to her being easily tricked into doing things she may or may not regret later. However, she’s not an idiot. She may sometimes be suspicious of people’s ulterior motives if they give her reason to do so, and she can detect wrong and right in most situations while sticking to her beliefs. She also has a hard time believing that her friends can do wrong; she denies it and defends them till the very end whenever she is told that they are/may be picking on someone else. It’s equally hard to make her believe in something she is against, though most people don’t understand why anyone would bother. Her heart’s in the right place, after all, and she’s always willing to help others. Why would anyone try to change that aspect of her? 

Yellow rarely holds grudges, and if she does, they can usually be dispelled rather quickly. Lance may or may not be an exception to this— it’s hard to tell with someone you haven’t seen in a whole bunch of years. However, she is a very clement, magnanimous, and generally forgiving person in a lot of situations.

During her adventure, it's noted that Yellow hid her gender so others would not recognize her, and went by an alias, Amarillo del Bosque Verde, or alternatively, Yellow Caballero. However, once the threat was subdued, she continued to wear her trademark straw hat from force of habit, and never corrected others when they assumed she was a boy. Sadly, this escalated to the point where she had a hard time revealing the long blonde locks to people, as she felt not only embarrassed, but somewhat guilty for deceiving them without really realizing it.

It's important to mention that Yellow is a brave and determined individual, and that when an obstacle presents itself, Yellow will persevere and find a way around or through it! While certainly not fearless, she does set off to look for the missing Red in her arc at the age of around ten, which is an impressive feat in and of itself. She also demonstrates confidence when undertaking this feat, stating that she WILL locate Red. Not that she'll try, but that she WILL. She's also innovative, figuring out she could manipulate a Pokeball on a string and therefore have an easier time fishing.

Yellow is a vegetarian. She may make an exception for Gold’s mother’s Volcano bakemeat burgers, but it’s rare. Like a once a year type of thing, and even then, she’ll feel bad for having done so. This is because she loves the heck out of all Pokémon and fauna—in summary, she’s a nature lover.

Yellow's disposition, like any other human being, depends on her mood, thought by default it's quiet and a little blunt. She's known to get flustered and embarrassed really easily. She’s still a child at heart, and thus, is prone to childish beliefs and actions as any other kid would be. The only difference? She can be much more mature than them.

Background
In canon, it is unknown how Yellow came to live with her ‘Uncle’ Will, however it is theorized that she was abandoned as a child as soon as she'd been born. Despite being conscious of the fact that she and her Uncle weren't related (which yes, is a canon fact), she was still happy, and lived in the Viridian Forest with him regardless. One day, as a very, very young girl, she was attacked by a rampaging Dratini. Her savior ended up being Red, who now (probably) holds the title as Kanto Champion. He taught her about Pokémon and how to treat them with love and care, like they are your friends! Not only this, but the raven-haired boy helped her catch her first Pokémon ever, Rattata. Later, she met Blue— whom soon was like an elder sister figure to her. Being sent on a mission by the girl, Yellow disguised herself as a boy under the alias of Amarillo del Bosque Verde (or Yellow Caballero, depending on the version(aka ViZ or Chuang Yi) of the manga you have) for safety reasons, and travelled Kanto making friends, catching new Pokémon, and saving the missing Red with the help of his Pikachu, Pika, who accompanied her throughout her journey. To accomplish this, she trained under Green. When she learned of evolution through this training (a necessity), however, she cried and cried and cried, thinking her Pokémon had been changed and all their memories of the times they had spent together had disappeared. Due to this, she dislikes evolution, and has a minor fear of it, which she is quickly getting over.

After the completion of this mission (and defeating Lance, the Kanto elite four champion), She went back to her regular life in the forest located in Viridian City.

Later on, she and her Uncle, along with Pika and the newest addition to the team, Chuchu, a Pikachu just like Pika, embarked on a new voyage to the Johto region in search of the legendary Pokémon, Lugia. At the time, this Pokémon resided in Cerise Island. While on this journey, they accidentally free the legendary beasts of Ecruteak City that lived in Burnt Tower, Entei, Raikou and Suicune, due to the Silver and Rainbow Wings hidden within the feathers of her straw hat.

Once Yellow’s encounter with Lugia was over, she was soon washed ashore, leading her to the Daycare Center of Goldenrod. The young healer later joined the other Pokedex Holders in the final battle against Mask Of Ice at Ilex Forest. Yellow, again, returned home after this.

Yellow decided to visit the Viridian Gym one day, and encountered Silver, who was there to learn about his past and possible hometown. Yellow aided him in this, with her ability to read the minds of Pokémon, and soon found out Silver was the long-lost son of Giovanni during their double battle with Team Rocket.

Silver was kidnapped, and Yellow chased them, soon finding herself on board the Team Rocket Battle Airship. There, she encountered Red and Deoxys, who she mind read to reveal the connection Red and the outer space Pokémon shared. When the Battle Airship started to fail, Red sent Yellow and Mewtwo away in a black hole, and Yellow remained unconscious due to exhaustion. She was still unconscious when she became petrified afterwards by Storc’s mysterious attack along with Red, Green, Blue and Silver.

2 months later, Mr. Briney shipped the petrified Dex Holders to the Battle Frontier via the S.S. Tidal. Emerald, eventually coming to terms with his own feelings toward Pokémon, channelled his wish to Jirachi, reversing the petrifaction of the five seniors. Yellow joined the battle quickly after regaining mobility, and when the combined grass, fire and water ultimate attacks failed, she synchronized her mind & spirits with Pika, Chuchu and Gold’s Pichu, the child of Pika and Chuchu, and delivered the combined electric ultimate attack, Volt Tackle, to put an end to the crisis threatening the Battle Frontier.

Abilities
By placing a hand over a Pokémon’s forehead, she is able to read their thoughts, emotions, and memories, as well as heal their wounds. She's also been gifted with limited Telekinesis, enough to manipulate a Pokeball on a string, such as when she was catching a Seadra in order to save Bill, or move one a ways away from herself, such as when she tag-teamed with Silver and moved a Pokeball out of a cloud of cotton spores so that she could send out her Pokemon without them getting injured in any way.

Yellow can ‘synchronize her spirit’ with the powers of her Pokémon, enabling their levels to skyrocket around the mid-80s. Doing this wears her out, however, and causes her to fall asleep or pass out. The same can be said of her other powers (healing,, telekinesis, and mind-reading)- despite this, they only really wear her out if used too much, rather than one go. Beside this, she does not get fatigued or tired all that easily.

Every several years, a child born in Viridian will be blessed with special abilities, such as the ones Yellow has. She, of course, is one of them, along with Lance.

It is theorized that Yellow can absorb and convert massive amounts of energy to greatly amplify the effects of her other powers.

Battle Style
Her battling style is rather defensive, as she tries not to let her Pokémon or the opponent's Pokémon get harmed. The only times Yellow actually battles is when there is grave danger, either for other people, the forest, or herself. She also doesn't catch for sport, seeing as one: she's terrible at it, and two: the only Pokémon she needs are the ones she has, because they are her friends. She's also demonstrated a keen ability to think on her feet, even when put under pressure, which has helped her get out of a lot of sticky situations. She may be taken aback by sudden danger, yes, who wouldn't? But she can handle dangerous situations because of how sharp she is, making her an OK strategist. 

She's quick on her feet in the literal sense, as battling require a lot of footwork, along with good reflexes. In the manga, contrary to the games, you do not sit by idly as you shout out attacks to your Pokémon. You're actually supposed to run around, possibly dodge some that may be aimed at you. She's perfectly capable and in good shape, due to all the travelling she and her team has done. 

Team
wip!