Vivian

Vivian made her debut in Paper Mario: The Thousand-Year Door, and was once a member of the villainous Shadow Sirens, which consists of herself and her older sisters, Beldam and Marilyn. She eventually abandoned them (as well as the Secret Society of X-Nauts in the process) and joined Mario's party as the fifth party member. Throughout the course of the game, Vivian suffered through an inferiority complex, due to the fact that she was constantly mistreated by Beldam. She joined Mario when he helped her find the Superbombomb her sister accused her of losing. She decides to repay Mario by helping him defeat Doopliss and regain his body and name. When they engage in battle she decides to officially and permanently join Mario's team. Eventually she gains confidence and learns to respect herself.

Abilities
Vivian's abilities include conjuring and wielding powerful fire attacks. She can also dive into the shadows, protecting herself and Mario from enemies. She is also so cute she can infatuate her enemies, leaving them confused.