Github Show Avatar

This extension will display large avatar pictures in your pull requests and issues list in Github and Github Enterprise. Ideal to quickly identify who created a pull request.
Furthermore, you can overwrite avatars of any user with an image of your choosing, which can bring both fun and better readability in the pages where it is applied.
It can also display 2 avatars side-to-side, which is really helpful to signal the team that 2 people are taking care of an issue, or have paired together in the code of a pull request.

It supports Github Enterprise on any URL though a really simple process (simply click on the icon when you are in your domain and then on "Activate" button)

Disclaimer : You are going to see your colleagues' faces... even more. ;)