Ash

Her name is Ash, she's an adventurer who landed on Amphibia after a random energy (or simply a portal lol) sucked her while she was resting in the park was near her school back in the human world.

Also her favorite colour is Yellow!

She landed in Toad Tower just like Sasha Waybright, who became her friend after a while.

She isn't the kind of girl who is friendly as heck and has a lot of friends, it's most likely she didn't had any friends back home, besides her mom, who barely had a decent conversation without joking around with her, but, everything changed once she landed in Amphibia, since she learned friendship wasn't that easy, it requires on effort, not just being nice to other people and then they're just going to magically become your friends.