First of all obvisously, Peach is a human and the chancellor is a mushroom. still need proof? I got this definition from an online feudal dictionary
CHANCELLOR: The officer of the royal household who serves as the monarch's secretary or notary. The chancellor is responsible for the Chancery, the arms of the royal government dealing with domestic and foreign affairs. Usually the person filling this office is a Bishop chosen for his knowledge of the law.
So there! He's just the king's secretary!
It's not a matter of optimism or pessimism, it's a matter of common sense! (half empty or half full?)