How do I show the user full name? I am building a Drupal 7 site, and using the Hybridauth module. On my site, users can register with Facebook and Twitter (through the Hybridauth module), or regularly through the registration form. 

When I am using a view, and add the field "User: Name", if the user registered through Hybridauth, it will show the full name; if the user registered on the site, and entered the full name in two dedicated fields, the view will show only the first name.

How can I present always the full name in both the cases?
It seems the hybridauth module passes the username trough a hook before output an if the user is registered through hybridauth,
You should be able to get your desired outcome by also using the Real name module which Hybridauth seems to integrate with.