Editor: AKFAvatar is software mainly for GNU+Linux, where an image of an avatar appears on the screen and tells Things written in a balloon. First the avatar moves slowly in from the right side. Then text is shown in a balloon.
The program avatarsay can be used as a fancy frontend for textconsole programs, or as a fancy text-reader or manpage-Viewer. Furthermore the program supports some basic commands, so it can be used as a scripting-language for simple demos.
You can use the libakfavatar library from your own C programs. There is also a rather mature Pascal-binding for GNU-Pascal and Free Pascal.