Vivian (Japanese: ビビアン, Hepburn: Bibian) is a character appearing in the 2004 role-playing video game Paper Mario: The Thousand-Year Door.

Vivian is a purple, ghost-like person with pink hair, white gloves, and a pink-and-white striped hat with the ability to hide herself in shadows and can manipulate flames.

[6][4] When Paper Mario: The Thousand-Year Door was localized to English and German, Vivian's status as a trans woman was not mentioned, and the transphobia from her sister was changed to insults about her appearance.

When she discovers who he is, Vivian is initially reluctant to help him further, but decides to join him due to the abuse she suffered from Beldam and the kindness Mario showed her.

[15] Vivian appears in a cameo role in the sequel, Super Paper Mario, both as a collectible card and as a plush doll owned by a character.

[16] Vivian has received mostly positive reception since her appearance in Paper Mario: The Thousand-Year Door, becoming a popular character.

[18] In their essay on transgender characters, authors Emil Christenson and Danielle Unéus discuss Vivian and how her femininity is designed.

[19] Author Nicholas Taylor includes her in a section on transgender characters in the book Queerness in Play, discussing how Vivian's role in the narrative can help players understand their experiences with gender, identity, and expression.

[8] Automaton staff discussed how the term "otokonoko" was, at the time of the game's release, becoming more recognized, used to refer to both crossdressing men and trans women.

They praised Vivian as a courageous character due to how difficult it is to come out about their identity, noting how her behavior, manner of speaking, and appearance show her as someone who works hard to be accepted as a woman.

Writer Laura Kate Dale was critical of dialogue in the game that stated she was at one time male, feeling it suggested she was not truly female.