Abhik

The Plugin stops the stripping of html formatting from the description (bio) field and sanitize content for allowed HTML tags for post content. Once you put this up, you can go and use all the HTML formatting allowed in posts in author?s bio. Pluginized by <a href="http://www.itsabhik.com" rel="nofollow ugc">Abhik</a>. Add me on Circles on <a href="https://plus.google.com/106671843900352433725?rel=author" rel="nofollow ugc">Google +</a>.

HTML in Author Bio

Enables the use of HTML formatting in Author Bio

Kevin Leary

Replaces the Biographical Info profile field with the WordPress visual editor, TinyMCE, allowing you to editor an author’s biography using rich text.
Please note that this plugins modifies the output of <code>get_the_author_meta('description')</code> and <code>the_author_meta('description')</code>, apply the same filters used to format content in the main editor.
<h4>Multisite Compatibility</h4>
The Visual Editor Biography plugin is compatibly with WordPress Multisite, just use the <a href="https://codex.wordpress.org/Create_A_Network#WordPress_Plugins" rel="nofollow ugc">Network Activate</a> feature to enable a visual editor on every site. If you only want a visual editor for a specific site then activate the plugin for that site only.

Visual Editor Biography

Works great

Great plugins last and this one still worsk well.

Still word well

Replaces the author "Biographical Info" profile field with a TinyMCE visual editor.

HTML in Author Bio vs Visual Editor Biography