RE: conversational chatbot for a real robot.

Bot Libre supports standard AIML 2. Pandorabots has some AIML extensions that are not supported.

But the ALICE and Rosie AIML scripts work with Bot Libre,

https://www.botlibre.com/browse?id=20873

https://www.botlibre.com/browse?id=29101561

There are bot templates for both of these.

For AIML see,

https://www.botlibre.com/manual-aiml.jsp

https://www.botlibre.com/forum-post?id=28654

Bot Libre also supports response lists, Self scripting, and Regular Expressions,

https://www.botlibre.com/manual-responselist.jsp

https://www.botlibre.com/forum-post?id=483549

https://www.botlibre.com/manual-self.jsp

https://www.botlibre.com/manual-regex.jsp

If you are trying to create the "most intelligent conversational bot" I would not recommend AIML, but instead recommend using response lists and Self scripting.