Madeline is a fictional character who serves as the main protagonist of the video game Celeste by Maddy Thorson.

The concept of Badeline—a physical representation of Madeline's depression and anxiety, known as "Part of Me" in-game—as well as the premise of taking care of one's self, was based on creator Maddy Thorson's own experiences.

Thorson notes, however, that this is a part of a process, and that she wanted to make players aware that Madeline was still grappling with an internal conflict at the end of the story.

When TowerFall, an earlier game by Maddy Thorson, was ported to the Nintendo Switch, Madeline and Badeline were added as playable characters.

[1] Madeline has received generally positive reception for her appearance in Celeste, with the Venture Beat staff naming her the best new character of 2018 and praising her for how well she resonated with them.

[8] Fellow Polygon contributor Jeff Ramos felt similarly, finding it inspiring how Madeline uses her challenges to help herself.

[14] People in the LGBTQ community were enthused by her potential status as a trans woman, due to the popularity of Celeste and "a sense of marginalization in both society and mass media.

[14] Ali Jones of PCGamesN cited Madeline's body dysmorphia, her estrangement from family members, and her struggling with a "shadow version of herself" as reasons for why she might be transgender.