If you’re tired of the same old default avatars that come with WordPress, why not make your own? It’s super easy to do with the Add New Default Avatar plugin.
After uploading and installing the plugin, go to the bottom of your Discussion settings page. (Settings > Discussion)
There you will have the ability to provide a link to a new default avatar. (You can just upload one to your media library and get the link for it.) You also have the ability to name it whatever you like.
A new default avatar will help your site to feel unique. You can make it themed to your site or even use the opportunity to get in a little branding.