Colormelon

Receiving a comment on your blog post is great and the more comments the better the feeling. It means that not only your post is good but your site becomes more and more popular and thrust-worthy. When comments start rolling in, you must make sure they display properly and look good. It’s great when a comment author has taken the time to upload a custom image of herself on her Gravatar account, but as we all know only a handful of people actually do that. This means that your precious comment area ends up filled with no-face, gray avatar thumbnails that look plane boring.
Well, that ends here and now!
Take control of the way your comment area looks by installing Avatar Project. Avatar Project is a plugin that will replace all avatar icons that don’t have a custom avatar assigned to it. Depending on your websites look, feel and theme, choose one of our Avatar Project icon packs. Currently you have a choice between colorful blobers, cups hoped up on caffeine, smug cat faces and a bunch of actual human portraits. 
This plugin will be useful for not only real, functioning blogs but for theme developers and designers as well. Install Avatar Project, write a couple of sample comments and make your comment area demonstration look much nicer than it would with the default avatars.

Avatar Project

Receiving a comment on your blog post is great and the more comments the better the feeling. It means that not only your post is good but your site be …

DanielAGW

Dev49.net

WP First Letter Avatar sets custom avatars for users without Gravatar. The avatar will be a first letter of the user’s name. You can also configure the plugin to use any other letter to set custom avatar.
WP First Letter Avatar includes a set of beautiful, colorful letter avatars in many sizes. Optimal size will be chosen by the plugin in order to display high quality avatar and not download, for example, big 512px avatars when only 48px is needed… PSD template for avatar is also included.
You can also create your own avatar set by creating new directory next to ‘default’ folder and following the naming convention from ‘default’.
By default, custom avatar will be set only to users without Gravatars, but you can change that in settings and not use Gravatar at all.
WP First Letter Avatar helps you bring more colors into your blog. Plus, your readers will be more willing to comment on your posts, since they can actually relate to these avatars much better than to Mystery Person.
All images were compressed using the fantastic <a href="https://tinypng.com/" rel="nofollow ugc">TinyPNG</a>, so avatars are incredibly light and ultra-high quality.
WP First Letter Avatar is also available <a href="https://github.com/Dev49net/wp-first-letter-avatar" rel="nofollow ugc">on GitHub</a>.
<h4>Compatibility with other plugins</h4>
WP First Letter Avatar is fully compatible with <a href="https://bbpress.org/" rel="nofollow ugc">bbPress</a> and <a href="http://www.gvectors.com/wpdiscuz/" rel="nofollow ugc">wpDiscuz</a>. For <a href="https://buddypress.org/" rel="nofollow ugc">BuddyPress</a> compatibility please use my other plugin – <a href="https://wordpress.org/plugins/buddypress-first-letter-avatar/" rel="ugc">BuddyPress First Letter Avatar</a>.
<h4>Requirements</h4>
WP First Letter Avatar requires at least PHP 5.4. It does not work properly on PHP 5.3.x and earlier.

WP First Letter Avatar

cool plugin

Set custom avatars for users with no Gravatar. The avatar will be the first (or any other) letter of user's name on a colorful background.

Avatar Project vs WP First Letter Avatar