Barty appeared to have been: intensely hateful, diabolical, scheming, evil, vengeful, cold, cruel, manipulative, callous, loyal, extremely intelligent, sadistic, shadowy, very arrogant, cunning, selfish and ruthless. He was obviously a quite powerful wizard, having demonstrated sufficient magical ability to Confound the Goblet of Fire into believing that four schools participated in the Triwizard Tournament in order for Harry to participate in the contest despite the object's power. Barty was also perceptively observant and exceptionally manipulative; his keen attention to the habits and motivations of others enabled him to impersonate Alastor Moody so accurately that he even managed to fool Albus Dumbledore.