C-3PO (aka See-Threepio, Threepio, Golden-Rod): C-3PO is the protocol droid who found his start in George Lucas' 1977 film Star Wars. C-3PO is the companion to the squat astromech droid R2-D2 making them the cosmic Laurel and Hardy. As well as being a protocol droid, C-3PO is fluent "in over six million forms of communication", all of them boring. It is also against his programming to impersonate a deity.
(Image courtesy of Wikipedia)