As a hero collection game, Sdorica's got Loads and Loads of Characters. Characters related to the metaplot are described here, while playable characters are divided into their positions, or into "Other" based on their country of origin.
The Player Character. This Featureless Protagonist watches events happening on the continent Vendacti through the Book of the Bequeathers. They've recently lost their memory, but are being guided through their duties by Rei. The Watcher has the rare ability to create Soul Bookmarks, a process that involves manipulating the flow Soul Energy.
The Watcher's true identity and purpose is a major ongoing mystery.
- Ambiguously Human: The one first-person POV the player sees seems to be from Rei's point of view...
- Ambiguous Situation: Exactly what's going on is called into doubt when the game "crashes" during the end of Sunset.
- Dreaming of Things to Come: Sees a vision of Angelia, Naya and Pang pursuing Uzziah—an event years away from happening in the game's timeline.
- Easy Amnesia: Has no memories of anything outside their room and duty. Rei says that it's simply strain from overusing their abilities, but doesn't seem particularly concerned about it happening again...
- Exactly What It Says on the Tin: The Player Character is a Watcher of the Bequeathers, and also The Watcher. They are a passive observer of history and leaving their room to interact with anyone other than Rei is strictly forbidden.
- I Am Who?: According to Rei, the player was Vendacti.
- Love Confessor: Rei asks the player what their relationship is in one of her daily conversations. You can offer a Love Confession, but it lowers her affection.
- The Watcher: As a Watcher of the Bequeathers, their job is to use the Book of the Bequeathers to be a passive observer of history. Leaving their room or interacting with anyone other than Rei is strictly forbidden. This is not, however, standard procedure for the Bequeathers, suggesting there's more to the rule than what Rei can or will say.
The Watcher's mentor and caretaker. With gentle smiles and encouraging words, she encourages the Watcher to experience the stories presented in the Book of the Bequeathers, and handles the in-game item shop. She freely admits to having secrets she can't share but looks forward to the day she can. And the end of Sunset suggests some of those secrets are bloody indeed.
- Big "NO!": Rei is extremely upset by Mirage chapter seven, and forces the Book to start the next chapter without your input.
- Beneath the Mask: Successfully using a Bookmark on her shows that she's weeping uncontrollably about her mentor's actions.
- Broken Pedestal: Finding out that her mentor, who inducted her into the Watchers stole the body of High Priest Devious to interfere with history.
- Fantastic Racism: She doesn't like Puggi, or the idea of an entire island of people like him.
- Guide Dang It!: Triggering the optional scene in Rei's Mirage chapter 10 dialogue is nearly impossible to do intentionally.
- Keeping Secrets Sucks: She openly admits she's keeping a number of secrets from the Watcher and asks that you wait until she can share them with you.
- Making the Choice for You: Rei is very upset after one chapter of Mirage and forces the player into the next chapter without warning.
- Mysterious Backer: Her self-introduction in the original Chinese is much more ambiguously worded than in English.
- Mysterious Past: She can't talk much about herself. Is extremely distressed if you bring up the vision involving her.
- Oddly Small Organization: Mentions in one optional dialogue that she hasn't seen any other Watchers since she started working with you, but alludes to unseen "superiors" in another one.
- Ominous Visual Glitch: Rei's dialogue during chapter 17 become distorted and the entire game glitches out, revealing an image of Rei in armour glaring at the player. The game blinks back to normal as Rei finishes her explanation.Rei: Huh? Wait, why do you suddenly look so pale?
- Relationship Values: Finishing Sunset or starting Mirage opens a daily conversation system. Rei has several branching dialogues that expound on characters, locations and the story. Interestingly, your relationship starts maxed out, and you unlock new conversations by intentionally worsening your relationship with her.
- Stepford Smiler: One pre-chapter conversation has a unique cut in of Rei smiling at the Watcher if your relationship drops very low. Unlike her normal smile, this one is downright alien.
- Trying Not to Cry: The pre-chapter 10 conversation with her can reveal that she's feeling an extreme sorrow. Or, given the circumstances and accompanying picture, remembering it.
- Video Game Cruelty Punishment: During Season 2, selecting dialog options that upset her may cause her to give you less valuable items (instead of crystals) or worse, nothing at all.
- We Used to Be Friends: In Season 2, if the relationship value between Rei and the player drops low enough, she'll start lamenting that there is a barrier between them. In Season 3, the player's dialogs to Rei tend to be hostile on account of what happens late in Season 2.
- Wham Line: In Season 3 chapter 2.Rei: It started 1000 years ago, when you were known as Vendacti.
- You Gotta Have Blue Hair: Most humans on the continent have normal hair colors. Rei's hair is a neon blue.