Host - Co-Host can also fit into this definition. These alters handle day to day life for the most part by fronting the most. These alters can also grow up being completely unaware to the system growing up. This however, doesn’t apply to every host but can due to the foremost fronting.
ANP - Short for apparently normal part. Almost if not all systems will have an apparently normal part. These are grounded and rational individual alters.
Protector - These alters handle protecting the system. Mostly from trauma but other situations can and do apply.
Trauma Holder - Alters who hold onto trauma are labeled as such. They handle often the memory of the trauma or emotions that come with dealing with said trauma mentioned.
Caregiver - This term is most popular with systems that have 1 littles. They are in charge of taking care of the littles and their needs. They also commonly help others in the system, especially the body.
Gatekeeper - Gatekeepers are in charge of managing switches, triggers. Another common thing gatekeepers control and or help take care of can include access to memories.
Helper - Those who assist in the helping managing the system. Similar to gatekeeper.
Introjects - Alters who split off and resemble a fictional character and or often times real people as well.
Middles - Child alters. Except, this can fall under only 12-17. Age range may vary from system but it used to describe tween to teenage alters rather than tiny children.
1 Littles - Like Middles, Littles are a term to describe child alters. This however only includes babies, toddlers, and kids. E.G. 1-11 year olds. Again, age range may vary by system and doesn’t apply to everyone but that’s the typical standard.
Persecutor - An alter that typically harm the body. This can be siding with an abuser, negative. These alters can also commonly be introjects of an abuser. They typically have protective or protective induced logical behind their actions. They not to be demonized and are fully capable of healing, their actions however are not to be blatantly excused.
Non-human Alters - These alters are - as self explainable - non-human. They can present as an animal, religious figure such as an angel or demon, or even a ghost or spirit. They are however not limited to these.
Sexual Alters - Alters that are formed to handle sexual abuse, trauma, so on. Do not guess their toleration to sexual acts because it varies between systems and alters. Just because they split off to handle sexual trauma does not mean they are comfortable with it.