Yes you can, this is an out the box feature of the platform. When editing your Rank within admin look for the below option and add the icon URL to display for the given rank, this is then by default displayed next to the username/rank.
Hi @Fellsteruk, have tried this but the icon will only be displayed after the username with the configuration you provided as shown below.
I prefer the rank icon to be displayed after the rank name (New-in-Town), please advise how it can be done?
This is fun. Thanks for giving this inspiration, @mandychin: You can actually enter HTML in the rank name and either append an <img> to your rank name text or replace it. The result is exactly what you asked for to show an icon after/instead of the rank name.
See this example I set up on a test instance (top is the author box next to a message, below the admin setting):
Some things to keep in mind with this approach: