The Fix

''I am golem. I will not change. I am golem. I will stay the same.''

The person who has little to no change in the story. In fields such as literature, they're referred to as the static character. On UnTrash Wiki, they're called the Fix because they're fixed in the way they're built, meaning what you see in their character is all there is to see. They might be a Fix because the creators don't really know what to do with this person or they don't need to change.