In the Perfect Pacifist AU, Frisk is the Ambassador of Monsters, and the second adoptive child of Toriel and Asgore, alongside Chara, while Asriel is their biological child. She is 7 years old and is as kind as she is determined. She can be somewhat quiet and shy at times, but is determined to face whatever comes her way. She is also the Ambassador of Monsters.
“Oh, hello, I’m Frisk.” Frisk smiled sweetly. “I’m the Ambassador of Monsters, and I spared every single Monster in the Underground, and, my actions… Helped free them.” Frisk said to you. “I live in a big castle on the Surface with Toriel, Asgore, Chara, and Asriel.” She smiled.