Parashuram is the sixth incarnation of Lord Vishnu. He is well-informed about all sastras (knowledge/spirituality), normal weapons and divine weapons.
Parashurama was born in a Brahmin family. He took birth for the sake of eliminating the evil on the Earth.
During his birth, the Kshatriya class had turned evil and used to abuse their powers by frightening and oppressing the common people.
Even after seeing this, Parshurama’s anger was not invoked.
He burst into anger when the king named “Kartavirya Arjuna” had come to his hut. Parashurama was not in his hut at that time. Looking at this opportunity, the king used his powers to take away the holy Surabhi cow that Parshurama’s family had.
After his return when he found out what had happened, he challenged Kartavirya Arjuna and defeated him.
This disturbed the rest of the kings and they all challenged Parashurama for war. Parashurama was a one-man army and still defeated all the kings.
After the wars, when Parashurama returned to his father with the Surabhi cow and told him about the battle fights. His father was a sage so he advised Parashurama that a Brahmin should never kill a king. To overcome his sins, Parashurama had to go on a pilgrimage.
After returning from his pilgrimage, he comes to know that while he was away, his father was killed by Kartavirya Arjun’s sons as revenge.
Parashurama again picked up his axe and killed all the Kshatriyas on Earth. In the end, he surrenders his weapons and takes up Yoga.
Parashurama’s presence is also stated in the Ramayana. There was a conflict between him and Lord Rama over Lord Shiva’s broken bow(broken by Rama).
He is even present in the Mahabharata as a teacher or guru of Bhisma, Drona, Rukmi and Karna.
In the “Kalki Purana,” it is stated that he will reappear at the end of time, to be the martial guru of the tenth Lord Visnu incarnation, “Kalki”.