History Characters / Celeste

* AntiVillain: Despite being the main antagonist of the story, it's made clear that she is, genuinely, trying to protect Madeleine from getting hurt or disappointed. While her methods and attitude are negative, Madeleine eventually learns that the two can work together.

* ShownTheirWork: [[https://en.wikipedia.org/wiki/Mount_Celeste Mount Celeste]] is an actual mountain in Vancouver, and the Canadian flags scattered around the mountain seem to imply the game is talking about the same one. The actual Mount Celeste is quite a bit shorter (2000 meters as opposed to the in-game one's 3000+) and obviously not magical.

* MySisterIsOffLimits: Completely averted. [[spoiler: According to Celeste 64, he helped Madeline and Alex meet and start dating.]]

* TheArcher: Theo's [=InstaPix=] account reveals [[https://www.instagram.com/p/BnB1mxbhU0A/ she took up archery as a hobby]] after their trip to the mountain, which ended up being a hint of her being added as a playable character in ''VideoGame/TowerFall'' for the Switch port.

** Celeste 64 adds another one when Theo casually reveals that [[spoiler: Celeste and Madeline have begun dating between games.]]

* SilentAntagonist: Unlike Madeline, Lani does not speak a word. Justified because there is no one to talk to in ''Lani's Trek''.

* MentalWorld: While not an entirely separate dimension like most examples of this trope, it is an EldritchLocation that can reflect the mental state of those who visit it, including producing an EnemyWithout and other monsters based on people's psyches.

* ContrastingSequelProtagonist: Appearance-wise, Madeline is light-skinned, wears blue, and has red hair, while Lani is dark-skinned, wears yellow and purple, and has blue hair. Their abilities also contrast with each other, as Madeline has a DoubleJump, while Lani's grappling hook allows her to move longer distances horizontally.

* ContrastingSequelProtagonist: Appearance-wise, Madeline is light-skinned, wears blue, and has red hair, while Lani is dark-skinned, wears yellow and purple, and has blue hair. Their abilities also contrast with each other, as Madeline has a DoubleJump, which allows her to jump to increased heights while Lani's GrapplingHook allows her to move longer distances horizontally.

The player character, a young adult woman struggling with depression and anxiety who decided to climb the Mountain to accomplish something.

The player character, and a young adult struggling with depression and anxiety who decided to climb the Mountain to accomplish something.

* BerserkButton: She gets positively FURIOUS when [[spoiler: Madeline tries to completely reject her and states she doesn't need her anymore, flinging her all the way down to the mountain.]]

* {{Deuteragonist}}: Her development and role in the story is just as important as Madeline’s … especially in chapter 9.

* EnemyWithout: What Badeline is made out to be according to Madeline. [[spoiler:In reality, Badeline is just the personification of Madeline's own flaws, fears and insecurities. After the end of chapter 6, they resolve their differences and start working together.]]

* JerkassHasAPoint: Not only is she proven correct about Mr. Oshiro (despite being completely callous about it), but she's also the voice of reason in Chapter 9, trying to convince Madeline to [[spoiler: accept Granny's death and move on instead of engaging in an unhealthy fantasy of trying to bring her back.]]

* SelfDuplication: As well as the DoppelgangerAttack mentioned above, [[spoiler:she also copies herself to play with Madeline in the credits.]]

* HistoryRepeats: [[spoiler: She and Theo's grandfather shared the Mountain together in a very similar way to Theo and Madeline, and as a young woman, Granny even strongly resembled Madeline herself.]]
* LiteralSplitPersonality: [[spoiler: Madeline believes in Chapter 9 that the blue bird who helped her along her journey across the mountain is a "Part of Her" in the same way that Badeline is referred to as "Part of You". Badeline disagrees, and the game itself leaves it unclear, as Chapter 9 is also AllJustADream.]]

* EnemyWithout: A non-violent version: [[spoiler:the countless eyes watching him and the crystal prison he's trapped in during the latter half of Chapter 5 are a manifestation of his own (vaguely implied) insecurities.]]

* OffModel: The game's [=CGs=] portray him as being transparent with FogFeet, but his sprite is opaque and shows him with feet.