In the rich text editor:
@Spoopydoodlez
In a comment:
[Spoopydoodlez](https://chowlings.com/user/Spoopydoodlez)
For Names and Avatars:
In the rich text editor:
%Spoopydoodlez
In a comment:
[![Spoopydoodlez's Avatar](https://chowlings.com/images/avatars/default.jpg)](https://chowlings.com/user/Spoopydoodlez) [Spoopydoodlez](https://chowlings.com/user/Spoopydoodlez)