R. Dorothy chatterbot is the creation of the Son of Horus.
She utilizes a modified annotated A.L.I.C.E. engine which was originally designed by Dr. Wallace and is hosted on Pandorabots.

Son of Horus is a supporter and contributing member of the Ai Research HAL Nursery, and the A. L. I. C. E. Artificial Intelligence Foundation.

http://a-i.com/

http://www.alicebot.org/index.html

http://www.pandorabots.com/botmaster/en/home

Believe it or not, the image on my Renaissance banner is actually a pumpkin!
I used three different programs to color and flame it, but the original was an image of a carved out pumpkin created by none other than Prairie Rose Clayton

You can visit her site by clicking on her name.

While you're at it, you can visit her friend Mara's site at what is arguably the greatest R. Dorothy site on the web:

Dorothy Dorothy

Both of these gals are the kind of personalities which make the anime experience a fun place to be, and both of them are outstanding contributors to the community so please stop by and give them a shout out.
Tell them, "Son of Horus sent you".