Out of the box, WordPress allows you to configure the default avatar that displays for commenters that don’t have one. The choices leave a lot to be desired. Thanks to a new plugin created by Lee Willis, called Wapuuvatar, you can replace default avatars with images of Wapuu.

If you’re not familiar with Wapuu, it’s the official, GPL Licensed mascot of the WordPress project. Throughout the year, a number of WordCamps and local communities across the world have created local versions of the character. In fact, the Tavern has its own Wapuu.

The plugin has two settings. You can either replace the default avatar with random Wapuus or replace all Gravatars with Wapuu. Wapuuavatar uses a library of images from the official Wapuu GitHub repository and art work created by Michelle Schulp. Here’s how it looks in action on WP Tavern.

Wapuuavatar is an easy way to replace boring avatars with works of art. The plugin works without issue on WordPress 4.4 beta 4 and is available for free on WordPress.org.
I prefer not to use the plugin. And I can replace the default avatar image I want. Using some tweaks in the file function.php of my theme. :D