This plugin is made during the development of the Construct 3 Firebase Plugin Collection to support it and is a part of its Bonus Plugins- https://www.constructdatabase.com/
When to use this
This plugin is built for use in multiplayer apps/games where each user have different profile images. You can Pick an instance by its IID, and then change its image.
(This was specifically built for the Firebase Chat and Social app Demo. Try Demo here)