Tranquil State

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.
 * Tranquil Combat

Variations
Calm State Emotionless Shell  Tranquil Emotions Tranquil Fear Tranquil Fury
 * 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.
 * Users can control their fear while retaining tranquility and are able to face what they're afraid of with relentless courage of a warrior, while gaining the vigilances and precautions of a survivor.
 * Combination with Feral Mind, that allows the user to channel the power of their rage while maintaining absolute control. Users of this ability can attack with the relentless strength of a madman, while gaining the speed and precision of a surgeon.

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
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Cartoons

 * Opal (Steven Universe)
 * Oogway (Kung Fu Panda)
 * Po (Kung Fu Panda)
 * Shifu (Kung Fu Panda)

Comics

 * Batman (DC Comics)
 * Raven (DC Comics)
 * Superman (DC Comics)

Movies

 * Emperor Palpatine/Darth Sidious (Star Wars)
 * Anakin Skywalker/Darth Vader (Star Wars)
 * Neo (The Matrix)
 * The Twins (The Matrix)

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
 * 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)
 * 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)
 * 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)
 * Shinichi Izumi (Parasyte); after merging with Migi
 * Uragami (Parasyte)
 * Shogo Makishima (Psycho-Pass)
 * 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)
 * 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)

Web Series

 * Nox Decious (Stupid Mario Brothers)
 * Lie Ren (RWBY)

Web Comics

 * Han Jee-Han (The Gamer); via Gamer's Mind

Live Television

 * Vulcans (Star Trek); via the Kolinahr ritual}}