Has George Lucas or another Star Wars director ever stated that Jar Jar Binks' character was in anyway influenced by C-3PO?

Question

Both Jar Jar and C-3PO utter this phrase:

How Rude?

It seems likely to me that Jar Jar and C-3PO serve a similar purpose:

• Comic Effect (C-3PO slightly more refined perhaps, and Jar Jar more slapstick)
• Diplomat to an alien species (Jar Jar to his own Gunguns, C-3PO to the Ewoks.)
• Notionally non-combatants (even if they both fight at some point), which may be easier to relate to.

Did George or a creative director make a deliberate choice in this similarity? Or are they both just fitting an archtype?

Answer 1

Nope.

According to an interview with George Lucas in TheVulture we learn that Jar Jar was largely inspired by Disney's Goofy;

"I can't even begin to tell you how much of an influence Disney has had on me," Lucas told fans at Disney’s D23 expo in Anaheim on Friday. "I will say one secret that nobody knows: Not many people realize that Goofy was the inspiration for Jar Jar Binks."

Whereas the major influences behind C-3P0 are generally acknowledged to be evenly split between Akira Kurosawa’s The Hidden Fortress and Fritz Lang’s Metropolis with a healthy dose of McQuarrie's amazing concept art sketches and Anthony Daniels' own input into the character.

Q. C-3PO was original written as sleazy used-car salesman-type of character, but on-screen he was more nervous than anything else. What brought that to the character?:

Daniels: That was George's idea... he was always [sleazy] in the script, but it's how you interpret [the character]. That's the difference between actors. George never told me he wanted a sleazy guy. So I just looked at it. I had six months working with the script before we started filming because we were making the costumes, so I just interpreted it and George didn't have time to correct me. I'm afraid 3PO stayed the way he was. He is 3PO, he isn't me. He is this strange creation that came out of somewhere