“What we pitched was a project to try to bring small autonomous animatronic creatures to life. We were really interested in the idea of creating some little guys that could truly respond to and interact with guests,” says Leslie Evans, Senior R&D Imagineer at Disney. She and Alexis Wieland, Executive R&D Imagineer, started the project with the goals to create something that was autonomous, but also created a reaction in the guests that felt like a real emotional relationship. They needed to have a “spectrum of personalities” and then a set of tools that would allow them to dial those attributes up and down before setting them loose on guests.

“I think that a lot of this was coming out of this desire to start thinking about animatronics as actors, so being able to say we want these characters to be shy, we want them to be outgoing ‑‑ trying to define them in terms of personality ‑‑ and then translating all of that into the technical tools that we need to bring the characters to life,” says Evans.

Well, we'll see if Disney magic can make this work. Douglas Adams, in his still-remarkable 1979 book The Hitchhiker's Guide to the Galaxy, describes robots gifted with what he calls Genuine People Personalities (GPP):

“Listen,” said Ford, who was still engrossed in the sales brochure, “they make a big thing of the ship's cybernetics. A new generation of Sirius Cybernetics Corporation robots and computers, with the new GPP feature.”
“GPP feature?” said Arthur. “What's that?”
“Oh, it says Genuine People Personalities.”
“Oh,” said Arthur, “sounds ghastly.”
A voice behind them said, “It is.” The voice was low and hopeless and accompanied by a slight clanking sound. They span round and saw an abject steel man standing hunched in the doorway...
“Ghastly,” continued Marvin, “it all is. Absolutely ghastly. Just don't even talk about it. Look at this door,” he said, stepping through it. The irony circuits cut into his voice modulator as he mimicked the style of the sales brochure. “All the doors in this spaceship have a cheerful and sunny disposition. It is their pleasure to open for you, and their satisfaction to close again with the knowledge of a job well done.”
As the door closed behind them it became apparent that it did indeed have a satisfied sigh-like quality to it. “Hummmmmmmyummmmmmm ah!” it said...
"Thank you the marketing division of the Sirius Cybernetics Corporation," said Marvin, and trudged desolately up the gleaming curved corridor that stretched out before them. "Let's build robots with Genuine People Personalities," they said. So they tried it out with me. I'm a personality prototype. You can tell, can't you?"