Objects shows text above them

My question as follow:

I need TEXT above my enemies so it shows, who they are for my game.
Example: An enemy names Carl or a NPC and above his head it shows text, who he or she is.
And of course when he or she moves it’s still above him.
And I don’t want a box or something just as example a big yellow text above his.

Kind regards,

helloiam.

http://wiki.unity3d.com/index.php?title=ObjectLabel