Don't step in self-doubt spirals. They make a mess!

My name is Iain and I'm a part of a system inside an older guy.

We use 'parts' to describe ourselves because that makes sense to us and is what we are trying to be - like parts of a team. Host uses it because we asked him to. We just want something where it's super clear we are real. I wonder what the people inside your system want to be called?
We have some parts we call 'fragments'. I don't know the real definition but they mostly do just one job and don't have a lot of feelings or thoughts outside of that. One is kind of like a robot who keeps us safe. He takes over when there is a threat of SH. He just follows the rules and can't be bullied or tricked because he doesn't care about anything else. Not a guy you can have a conversation with though.
We also have a fragment that used to attack people who tried to hurt us. He was kind of a problem so we had to find something else for him to do (you can't like attack a doctor for touching you where it hurts

Really parts/alters are real people and that means they're complicated.
Iain