Who was the agel that visited Muhammad and told him he was a prophet?

The angel that visited Muhammad and informed him that he was a prophet was Gabriel, known as Jibril in Arabic. During the Night of Decree, also known as Laylat al-Qadr, Gabriel conveyed the first revelations of the Quran to Muhammad in the cave of Hira. This event marked the beginning of Muhammad's role as the final prophet in Islam. Gabriel continued to guide Muhammad throughout his prophetic mission.