Yellow is a kind-hearted individual who 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.
She is a pacifist. She will only fight when necessary. Speaking of which, she GREATLY dislikes violence, and she’d rather make friends and allies than enemies. She will try to in every situation. Despite this, she may sometimes be suspicious of people’s ulterior motives if they give her reason to do so.
She’s naive and gullible, leading to her (sometimes) being easily tricked into doing things she may or may not regret later. However, she’s not an idiot. She can detect the wrong and right in most situations while sticking to her beliefs. Amarillo has a hard time believing that her friends can do wrong; she denies it and defends them till the very end whenever he is told stold 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?
The young healer 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 very forgiving in a lot of situations.
She’s protective of her gender, since she thinks the only use for it is to ‘take advantage of people’— something the PKMN Trainer would never, ever want to do.
Yellow is a vegetarian. She may make an exception for Gold’s mother’s Volcano <s>bakemeat</s> 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 Pokemon and fauna—in summary, she’s a nature lover.
But most importantly, she’s still a child at heart, and thus, is prone to such childish beliefs and actions as any other kid would be. The only difference? She can be much more mature and serious than them.
Yellow was abandoned as soon as she was born, leaving her to live with her ‘Uncle’ Will, who wasn’t really related to her. She is conscious of this, yet she lived happily in the Viridian Forest with said Uncle, but 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 for safety reasons, and traveled 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 healerlater 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, channeled 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.