Tranquil State

"The true mind can weather all the lies and illusions without being lost. The true heart can tough the poison of hatred without being harmed."

- Lion Turtle (Avatar the Legend of Aang)

"Panic is Pointless."

- Kal-El/Clark Kent/Superman (DC Comics)

"Anger is the god of fools."

- O-Sensei (DC Comics)

"His overwhelming coolness towards those who would do him harm is greater than my own."

- Hiei on Yoko Kurama (Yu Yu Hakusho)

The ability to enter a state of self-induced tranquility. Not to be confused with Apathy. Opposite to Feral Mind.

Also Called

 * Mental Endurance/Fortitude/Resilience/Resistance
 * Nerves of Steel
 * Poker Face
 * Soul of Ice (Ranma 1/2)
 * Tranquility

Capabilities
User can remain calm in virtually any situation, allowing them to think with perfect clarity even when under extreme emotional or physical distress. Users can endure mental stress and can be essentially immune to emotional manipulation and highly resistant to torture.

Applications

 * Fear Masking
 * Avoid hesitating in some situations.
 * Give the impression that one is immune to pain.
 * Intimidation by demonstrating total disregard of pain or willingness to do anything to achieve their goal.
 * May allow Empaths to use their powers with greater ease.
 * Maximum Concentration Capacity by thinking clearly in dangerous situations.
 * Serene Combat

Variations
Calm State Emotionless Shell  Tranquil Emotions
 * Enter or be in a state of absolute serenity/tranquility.
 * Temporarily or permanently empty oneself of emotion. Allows the user to operate at peak efficiency by blocking out any external distractions, may alter the properties of the user's chi.
 * Users can channel the power of their emotions while maintaining complete focus and control.

Associations

 * Aura Manipulation
 * Chi Manipulation
 * Clear Mind
 * Empathy
 * Enhanced Wits
 * Fear Masking
 * Indomitable Will
 * Martial Arts Intuition
 * Pain Suppression
 * Serenity Inducement
 * Spiritual Meditation

Limitations

 * Low-level users may only be able to maintain this state for a short time.
 * Constant suppression of emotions may result in mental instability.
 * Pain is still felt although the reaction is suppressed.
 * May require meditation to perform.
 * Certain events can cause users to be caught off guard.

Known Users
See Also: The Stoic and Nerves of Steel.

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Comics/Cartoons

 * Bruce Wayne/Batman (DC Comics)
 * Raven (DC Comics)
 * Kal-El/Clark Kent/Superman (DC Comics)
 * Opal (Steven Universe)
 * Oogway (Kung Fu Panda)
 * Po (Kung Fu Panda)
 * Shifu (Kung Fu Panda)

Live Television/Movies

 * Emperor Palpatine/Darth Sidious (Star Wars)
 * Anakin Skywalker/Darth Vader (Star Wars)
 * Neo (The Matrix)
 * The Twins (The Matrix)
 * Vulcans (Star Trek); via the Kolinahr ritual

Manga/Anime

 * Narukami Sakaki (Absolute Duo)
 * Kiyotaka Ayanokouji (Classroom of the Elite)
 * Android 17 (Dragon Ball Super)
 * Son Goku (Dragon Ball Super); via Ultra Instinct
 * Agatsuma Zenitsu (Demon Slayer: Kimetsu no Yaiba); while asleep
 * Amel/Americano Beans (Americano Exodus)
 * Takeshi Kotobuki (Ajin)
 * Sakamoto (Sakamoto desu ga?)
 * Inaho Kaizuka (Aldnoah.Zero)
 * Sōsuke Aizen (Bleach)
 * Zommari Rureaux (Bleach); via meditation
 * Shūkurō Tsukishima (Bleach)
 * Ulquiorra Cifer (Bleach)
 * Shunsui Kyōraku (Bleach)
 * D (Dual! Parallel Trouble Adventure); only when in her bioroid body
 * King Bradley (Fullmetal Alchemist)
 * Akira Hongō (History's Strongest Disciple Kenichi)
 * Menthuthuyoupi (Hunter x Hunter)
 * Shoto Todoroki (My Hero Academia)
 * Jotaro Kujo (JoJo's Bizarre Adventure)
 * Guido Mista (JoJo's Bizarre Adventure Part 5 Golden Wind)
 * Ei Sei (Kingdom)
 * Ou Ki (Kingdom)
 * Tou (Kingdom)
 * Ba Jio (Kingdom)
 * Rin Ko (Kingdom)
 * Ou Sen (Kingdom)
 * Shun Sui Ju (Kingdom)
 * Meliodas (Nanatsu no Taizai)
 * Zabuza Momochi (Naruto)
 * Itachi Uchiha (Naruto)
 * Sage Mode Users (Naruto)
 * Marika Tachibana (Nisekoi)
 * Van Augur (One Piece)
 * Donquixote Doflamingo (One Piece)
 * Basil Hawkins (One Piece)
 * Borsalino/Kizaru (One Piece)
 * Trafalgar D. Water Law (One Piece)
 * Dracule Mihawk (One Piece)
 * Nico Robin (One Piece)
 * Charlotte Katakuri (One Piece)
 * Shinichi Izumi (Parasyte); after merging with Migi's cells
 * Uragami (Parasyte)
 * Shogo Makishima (Psycho-Pass)
 * Stella Shining (Price of Smiles)
 * Ranma Saotome (Ranma 1/2); via the Soul of Ice technique
 * Elsa Granhiert (Re:Zero)
 * Seta Sōjirō (Rurouni Kenshin)
 * Karasu (Yu Yu Hakusho)
 * Kurama (Yu Yu Hakusho)
 * Sensui Shinobu (Yu Yu Hakusho)
 * Younger Toguro (Yu Yu Hakusho)
 * Clear Note (Zatch Bell!)

Video Games

 * Terumi Yuuki (BlazBlue)
 * Vergil (Devil May Cry)
 * Ganondorf (The Legend of Zelda)
 * Solid Snake (Metal Gear)
 * Yu Narukami (Persona 4)
 * Espurr (Pokemon)
 * Ada Wong (Resident Evil)
 * Link (The Legend of Zelda: Breath of the Wild); originally
 * Sasaki Kojirou (TYPE-MOON)
 * Green Dragon (Valkyrie Crusade)
 * Pokemon that learn 'Calm Mind'(Pokemon)

Web Comics/Series
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 * Nox Decious (Stupid Mario Brothers)
 * Lie Ren (RWBY)
 * Han Jee-Han (The Gamer); via Gamer's Mind