- Awesome Mc Coolname: "Tatsuhiko Shido" (purple-wysteria dragon-son) is merely the character's current alias, and too over the top for Guni to hold back from snarking about it.
- Badass Longcoat
- Bloody Murder: Shido can use his blood as a weapon. In particular, he can change it into a sword.
- Brainwashed: In the past by Cain.
- Even the Guys Want Him: Cain does.
- Friendly Neighborhood Vampire
- May–December Romance: With Riho.
- No Name Given: Shido's name is just an alias. While this is great for the mystique factor, there's also the justification that he suffers from Identity Amnesia.
- Romantic Vampire Boy
- You Gotta Have Lavender Hair
- Action Girl
- Badass in a Nice Suit
- Cool Car: A red Aston Martin DB7.
- Fair Cop: While Yayoi is not a police officer in the show, she is one in the game, and she is young and attractive in both continuities.
- The Team Normal: Unlike the other members of the main cast, she does not have (or gain) supernatural powers.
- You Gotta Have Blue Hair
- Clingy Jealous Girl: Rather mild case. She wants Shido's affection, and initially is jealous of Yayoi since Shido spends so much time with her. Riho is less clingy after she becomes a Secret Keeper.
- Friendly Neighborhood Vampire: Undergoes an Emergency Transformation in episode 4. She becomes a sort of apprentice to Shido, who continues to protect her while showing her how to get by as a vampire.
- Girl Friday: Shido hired her out of pity for her situation (see below: Parental Abandonment) to do office chores that probably don't even need doing.
- May–December Romance: After she becomes a vampire she actually has a shot with Shido, despite an age gap of centuries. Their romantic relationship begins with string-pulling by Cain, of all people.
- Parental Abandonment: Riho's parents were killed by a Nightbreed.
- Plucky Office Girl: She wants to do more than fetch Shido's coffee, and her persistence in trying to prove herself to Shido gets her on the wrong side of the Masquerade.
- Head Pet: In the original game, Guni inhabits Shido's ear and can be seen popping in and out of his head. The early part of the reflects this by showing Guni emerging from Shido's hair, but the later parts of the show drop this.
- Snarky Non-Human Sidekick
- Agent Peacock
- Canon Foreigner
- Charm Person
- Depraved Bisexual
- I Love You, Vampire Son
- Name of Cain
- Stalker With a Crush
- Whip It Good: Just as Shido can use his blood as a sword, so Cain can use his as a whip.