Many popular commercial themes come with an attractive mega menu system. You can also use mega menu plugins to enhance older themes. Mammoth Submenu is designed for Visual Composer users. It lets you use VC widgets to build mega menus. You can add contact info, shop items, team members, and other useful content to your menus.
You will be able to add videos, portfolios and animated content to your menus. The plugin seamlessly integrates with Visual Composer, so you can use a drag & drop interface to customize your website.
This is a commercial plugin by an Elite Author. More info is available here.