Thanks for the source code and a few suggestions.

[st4rlight]

Thanks for sharing the source code, I used your activity_about.xml in my own application.

And I find that the cardview where put icons and names of all authors seems unaligned, the "Celestial Phineas" and his icon are not in the center.

The three color blocks you used as logo of authors may could be replaced by CircularImageView, the recommended open source library is https://github.com/Pkmmte/CircularImageView, which works well in my app.