Who will question us in the Hereafter: Is it Allah, the Almighty, or the angels? And are there any proofs for this from the Qur'an and Sunnah?

The one who will hold humanity accountable on the Day of Judgment is Allah the Almighty Himself, in His Noble Essence. Texts from the Quran and Sunnah have indicated this. Allah Almighty says: (And they will be presented before your Lord in rows, [saying], "You have certainly come to Us just as We created you the first time.") Al-Kahf:48. Furthermore, the angels will bear witness against the servants regarding what they did.