Hihi! What’s an archetype?
I'll try and explain it as best as I can, any other archetropes out there feel free to add your own info!
An archetype is generally a motif or recurring set of characteristics, tropes, and roles used to describe a character, typically in literature, and tends to be universal (e.g the idea of the hero, the villain, the sidekick, the love interest, etc)
There are many different things that can be interpreted as archetypes (e.g Jungian archetypes, Tarot, Zodiac signs, etc) and many beings may create their own.
In terms of alterhumanity, an archetype is the archetype that someone identifies with or as---and they may refer to themselves as an archetrope. This archetype may shape things like their personality, career, hobbies, etc.
For example, I have an archetype I like to refer to as the green-eyed monster, which describes characters that are driven by feelings of envy and jealousy---often portrayed as villains that are corrupted by these feelings. Two characters that come to mind for me that fit this descriltion are Monika from DDLC and Ashfur from warrior cats, and I'm sure there are plenty more
TLDR: An archetype is a universally portrayed role, motif, or set of characteristics that someone may identify with or as