If they work like other NPCs, then their equipment is determined by a combination of factors:
1) Their character (viewable via the Character tab in editor) data points to a certain Equipment set name. Because they are global, I'm not too sure how easy it is to change which set they point to.
2) The equipment set name and all of their contents are located in the D:OS/Data/Public/Mod_Name/Stats/ folder under one of the files related to Equipment. It should be possible to overwrite their existing equipment set with changes in your mod's txt file of the same name.
