人物
A character refers to any person, historical or generated, that is represented personally in 
Crusader Kings III. Every single character is an individual, living entity that will act individually and has the potential to change history. Characters can be either noble or 
lowborn, and landed or unlanded.
- Noble characters are members of a
dynasty. - Lowborn characters are not members of a dynasty. If they are landed with a republic or theocracy title, they will remain lowborn. If they are landed with any other title, they will become noble and found a dynasty.
- Landed characters own at least one holding.
- Unlanded characters do not own any holdings.
Domain
The 
domain is the collection of all holdings a ruler owns personally. Each ruler has a domain limit; this determines how many holdings from which they can efficiently collect 
taxes and 
levies. Once the domain limit is reached, newly controlled holdings will not provide any taxes and levies and the ruler's vassals will receive an 
opinion penalty of -10 towards them for each controlled 
county that is over the limit. Domain limit is calculated by:
- +1 per 5 points of effective
stewardship skill (which includes any traits and spousal assistance) - +1 for each of the following
cultural innovations: Ledger, Bailiffs, Guilds, and Court Officials (all in the Civic track) - +2 if Primary Title rank is Count or
Duke - +3 if Primary Title rank is
King - +4 if Primary Title rank is
Emperor - +2 for "Divided Attention" in the Architect stewardship perk tree.
- +1 for level 5 "Law" Dynasty Legacy
Sexual Orientation
A character's sexual orientation determines with which gender they will gain attraction opinion and can form lover relations. It is decided when the character is around 10 years old and cannot be changed. AI characters will never try to form a relation with characters that do not match their sexual orientation. Both the initial distribution of sexual orientation and the chance for children to gain a certain sexual orientation is determined by the sexuality distribution game rule.
If the child is played by a player, there is a 20% chance that the player will get to pick the gender preference.
| Male icon | Female icon | Preference | Can form lover relations and have attraction opinion with |
|---|---|---|---|
|
|
Heterosexual | Characters of the opposite gender |
|
|
Homosexual | Characters of the same gender |
|
|
Bisexual | Everyone |
|
|
Asexual | No one |
Opinion
Each character has an opinion of every other character. The opinion the player character holds influences the success rate of certain actions that target another character. The opinion of AI characters also determines their behavior towards other characters.
When a character dies, their 
primary heir will temporarily inherit the opinion of vassals towards the late liege. This opinion modifier is shown as Opinion of Predecessor.
- Positive opinion towards predecessor: 25% of opinion is inherited.
- Negative opinion towards predecessor: 50% of opinion is inherited.
Attraction
Attraction is an opinion modifier that can only be held towards characters one's sexual preference allows. Male characters aged above 65 years and female character above 50 years are not affected by attraction.
Relations
When certain requirements are met, two characters can have one of three types of relations, with each type having three levels. Relations have a great impact on how two characters act towards each other.
- Childhood relations can only be held between two child character and might evolve into their corresponding adulthood relations when the characters reach adulthood
- Adulthood relations can be gained and lost as a result of events
- Lifelong relations can only be obtained towards characters with an existing adulthood relation and each character can have only one of each lifelong relation
| Relation | Childhood | Adulthood | Lifelong |
|---|---|---|---|
| Friendship | Friend
|
Friend
|
Best Friend
|
| Love | Crush
|
Lover
|
Soulmate
|
| Conflict | Bully-Victim
|
Rival
|
Nemesis
|
Tyranny
Tyranny is negative opinion gained by rulers who take unjust actions. It is felt by vassals and courtiers towards a liege. The maximum tyranny a character can have is 1000. Tyranny is not gained if the liege has a valid reason.
| Action | Tyranny |
|---|---|
| Successfully imprisoning a character | +20 tyranny |
| Increasing feudal obligations | +20 tyranny per obligation without concession or hooks |
| Revoking title without title revocation reason | +20 tyranny |
| Retracting a vassal | +5 tyranny |
| Banishing a vassal | +5 tyranny |
| Executing a vassal | +10 tyranny |
| Events | Varies |
Tyranny is reduced over time. This amount can be increased by 
perks, legacies and more. Tyranny gained through actions can also be reduced.
| Condition | Effect |
|---|---|
| Base decay | -0.25 tyranny per month |
| Venial (Guile dynasty legacy) | -0.05 tyranny per month. |
| Defender of the Faith (Theologian lifestyle perk) and Faith has Righteous doctrine |
-25% tyranny gain |
| Soon Forgiven (Administrator lifestyle perk) | -0.15 monthly tyranny |
| Easy difficulty | -25% tyranny gain (player) |
| Very easy difficulty | -75% tyranny gain (player) |
| Pursuit of Power tenet | -50% tyranny gain |
| Faith is Donyi-Poloism or Sedism and Faith holds holy site Pemako |
-20% tyranny gain |
| Faith is Bidaism or Siguism and Faith holds holy site Niani |
-0.1 monthly tyranny -20% tyranny gain |
With the Torturer lifestyle perk Malice Implicit, characters gain 
+0.5 dread per tyranny.
Personal diplomacy
All characters have an opinion modifier, Personal Diplomacy, which is based on a character's skill. It is calculated by taking the character's 
Diplomacy skill and subtracting 8.
Diplomatic range
The diplomatic range is the distance within which two characters can interact with each other. Neighboring realms are always within diplomatic range of each other, as well as realms separated by no more than three sea zones.
Names
Each character has a name.
- Their first name is chosen at birth (or, for generated characters, when they are created) and it is based on their
culture. - Some cultures may have patronymics (names based on one's father) which act as a middle name.
- Their last name is decided by their dynasty.
Nicknames
- メイン記事へ: Nickname
Nicknames are epithets granted to characters and are displayed either before or after a character's name. They are mainly gained thorugh 
decisions and events.
AI Personality
AI characters will use decisions and character interactions based on the following attributes:
- Boldness: determines how much the character is affected by dread.
- Compassion: determines how the character will treat its prisoners.
- Energy: determines how often the character will consider a decision.
- Greed: determines how easily the character will spend gold.
- Honor: determines how often the character will honor relationships and alliances as well as how often they will become agents.
- Rationality: determines how strong a character's army has to be before declaring war.
- Sociability: determines how often the character will consider a character interaction.
- Vengefulness: determines how much the character will seek to punish transgressions.
- Zeal: determines how often the character will join holy wars.
Each attribute is capped at -100 and +100.
Each AI character will have its personality described with an adjective and a noun based on the highest two attributes:
| Attribute | Very Negative (-76 to -100) | Negative (-1 to -75) | Positive (+1 to +75) | Very Positive (+76 to +100) | ||||
|---|---|---|---|---|---|---|---|---|
| Adjective | Noun | Adjective | Noun | Adjective | Noun | Adjective | Noun | |
| Boldness | Spineless | Craven | Cowardly | Coward | Bold | Gambler | Fearless | Adventurer |
| Compassion | Evil | Villain | Callous | Brute | Compassionate | Altruist | Gracious | Empath |
| Greed | Content | Lackey | Content | Follower | Covetous | Grasper | Rapacious | Ravener |
| Honor | Treacherous | Blackguard | Dishonorable | Knave | Honorable | Gentleman / Gentlewomen | Righteous | Paragon |
| Rationality | Insane | Maniac | Irrational | Fool | Rational | Thinker | Analytic | Planner |
| Vengefulness | Magnanimous | Absolver | Forgiving | Conciliator | Resentful | Quarreler | Vindictive | Antagonist |
| Zeal | Godless | Atheist | Cynical | Unbeliever | Religious | Believer | Zealous | Zealot |