[support] How can i prepend tags do usernames?

[Felipe Fidelix]

I want to display some characters based on roles or something else that
could categorize users.

Like:

!admin
#moderator
%contributor
+donator

!Fidelix
#Fidelix
%Fidelix
+Fidelix

Got it? I don't want to change usernames directly, i just want to change the
output when they're displayed.
Thank you.
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