Ja, i båda fallen. (Spoilers för post-GoF)
Cruciatus förbannelse
Cruciatus förbannelse används av Harry på Bellatrix Lestrange, som hon flyger Department of Mysteries i Phoenix-ordningen :
Hatred rose in Harry such as he had never known before; he flung himself out from behind the fountain and bellowed, “Crucio!”
Bellatrix screamed: the spell had knocked her off her feet, but she did not writhe and shriek with pain as Neville had - she was already back on her feet, breathless, no longer laughing. Harry dodged behind the golden fountain again. Her counter-spell hit the head of the handsome wizard, which was blown off and landed twenty feet away, gouging long scratches into the wooden floor.
“Never used an Unforgivable Curse before, have you, boy?” she yelled. She had abandoned her baby voice now. “You need to mean them, Potter! You need to really want to cause pain – to enjoy it – righteous anger won’t hurt me for long – I’ll show you how it is done, shall I? I’ll give you a lesson—”
Det här är efter att Bellatrix har dödat Sirius, Harrys enda återstående familjemedlem, så han är förståeligt arg.
Om det inte räknas, använder Bellatrix det också på Neville i samma kamp:
Bellatrix raised her wand. “Crucio!”
Neville screamed, his legs drawn up to his chest so that the Death Eater holding him was momentarily holding him off the ground. The Death Eater dropped him and he fell to the floor, twitching and screaming in agony.
Imperius förbannelse
Imperius förbannelse används (även av Harry) när trioen bryter in i Gringotts bank. Vid den tiden är en av goblinsna på väg att blåsa sitt lock, så Harry behöver stoppa honom med det. (Vid denna tidpunkt har trioen blivit branded brottslingar och i förklädnad.)Harry raised the hawthorn wand beneath the cloak, pointed it at the old goblin, and whispered, for the first time in his life, “Imperio!”
A curious sensation shot down Harry’s arm, a feeling of tingling warmth that seemed to flow from his mind, down the sinews and veins connecting him to the wand and the curse it had just cast.
Det finns många andra fall där förbannelserna används i hela böckerna (och filmerna), men förhoppningsvis är de två exemplen ovan tillräckliga för att visa att ja, alla tre förbannelser användes.