In Honkai: Star Rail, you can spruce up your pioneer profile a bit by adding some HTML tags. For example, you can change the color of your nickname or profile description to blue, underline it, and strike through it. This mini-guide will show you how.
So, to format a nickname or profile description, you need to highlight the text with the following tags:
In order to change the nickname or profile description, go to the menu -> three dots in the upper right corner -> pioneer profile.
It is worth noting that the nickname can only be changed once every 72 hours. Profile description can be changed without restrictions.