R.O.B. & Professor Hector are a pair of characters that appear in Kirby's Dream Land 3. R.O.B. originated as an accessory for the NES, and Professor Hector originated from the game Gyromite, also known as Robot Gyro in Japan. They appear in the sixth level of Sand Canyon. Professor Hector wants Kirby to find the five parts of R.O.B., so that it may be reassembled. If Kirby finds all of the parts and obtains them in the correct order, he will be rewarded with a Heart Star at the end of the level.
R.O.B. stands for "Robotic Operating Buddy."