↔: Indicates that the alter is an age slider and can move in between the ages listed.

Adult AI: Personal term. Refers to someone who is a robot of any physical age but has the maturity level of an adult.

Age shifter: An alter who can change their age at will

Age slider: An alter whose age changes. For us, this is never purposeful.

Alter: The term we use for the members of our system. Synonyms are headmate, system member.

Dormant: When an alter can no longer front or be communicated with.

Front: The position an alter holds when they control the body.

Headspace: The place inside of a system's mind where alter's exist.

Integration: When two or more alters fuse together to become one alter.

Introject: An alter that is based on something from outside of the system.

Factive: A type of introject based on a person from real life.

Fictive: A type of introject based on a fictional character.

Demi-fictive: An alter that is kind of a fictive, but kind of something else.

Parafictive: A type of fictive that is based on a fictional character, but specifically a version of that character from a MADD paracosm.

Poly-fictive: A type of fictive based on multiple separate fictional characters, merged into one being.

Post-fictive: An alter that originally was a fictive but no longer identifies solely as that character.

Fucktive: A type of introject based on something that blurs the lines between fact and fiction. May be a fictional version of a person, a mixture of fictional and factual sources, or many other things. Synonym is faitive.

Poly-fucktive: A type of fucktive based on multiple separate beings, being fictional and/or factual and/or anything in between, merged into one being.

Kin: Someone who identifies as something outside of themself.

Niche: Personal term. See here for an in-depth explanation

Non-verbal: Someone who cannot/struggles to/does not want to communicate with words.

Personal term: A term that is not used by the system community at large but is instead something we created.

Polyage: An alter who is multiple ages at the same time.

Source: The material an introject is originally from. See here for a list of the sources of our currently active members as well as an explanation of the abbreviations

Subsystem: A system that exists inside of the main system.

Altverbal: does not communicate in what is considered a "typical" manner of speaking.

Angry: feels anger and other "loud" negative emotions more intensely than other members; refuses to allow the system to be taken advantage of.

Autistic: displays more of our autistic symptoms than others.

Baby: an especially young and childish alter.

Callow: immature; tends to act in the manner of a teenager or young adult.

Chill: only wants to relax; often does not take care of the system's responsibilities.

Church: a character from the show Red vs Blue. Many of our members are in some way identified as him.

Cruel: causes intentional harm to the system or those around us- usually thinks they are justified in doing so. Often hypoempathetic

Dad: acts as a father figure for other members; may literally be a father in some cases.

Happy: just in a good mood :)

Hyper: filled with energy and excitement; usually burns the body out quickly when fronting.

Libidinous: more frequently experiences or is preoccupied with our more intimate desires.

Logical: values logic above emotions; tends to speak formally.

Protective: protects others, inside the system and out.

Responsible: takes care of the body and our life.

Rude: isn't very good at communication and doesn't care to be; may cause harm to the system unintentionally. Often hypoempathetic.

Sad: mainly preoccupied with negative

Soft: more sensitive and kind than other system members; tends to like more childish or "girly" things. Often hyperempathetic.

Among Us (AU)

Dungeons and Daddies (DnDads)

Danganronpa (DR)

Free!

Red vs Blue (RvB)