Board Thread:Support Requests - Designing Your Wiki/@comment-32590715-20200618132915/@comment-26611127-20200618185538

Assuming your file names are all named using the same convention, you could put this in the template.

This replaces this first letter with an image, and displays the rest of the text excluding the first letter. There's probably many more ways in which you can achieve this that are better, but I'm used to using parser functions.