In the rich text editor:
@Bakatouga
In a comment:
[Bakatouga](https://cometcrashers.org/user/Bakatouga)
For Names and Avatars:
In the rich text editor:
%Bakatouga
In a comment:
[](https://cometcrashers.org/user/Bakatouga) [Bakatouga](https://cometcrashers.org/user/Bakatouga)