Rockstar Freddy, based on his Ultimate Custom Night quotes, is shown not to have any real personality, seemingly being a token-receiving entertainment robot.[1] However, when using the Heater or not paying enough Faz-Coins, he does appear to be observant and easily agitated. It's implied he is greedy and impatient, given how hostile he is when he's not being paid.[2]

However, he is shown to be able to be courteous, as it's implied he's the one giving the power-ups to the player occasionally aft