So about 10-15 years ago, before the term Zako... the fetish was generally referred to as "Sentries". And we all used Yahoo Groups (It was a simpler time).
One of the groups (blanking on the name) was basically a spy tale sort of group focused on RP's and stories among members, often involving zako. Here's a selection from an Author named "RapidWar"
drive.google.com
drive.google.com
drive.google.com