Answer: Visigoth, Huns, Vandals.
Explanation: Most of the peoples who inhabited Europe during the great migration of peoples mostly came from Asia, known as barbarians, and who were a constant threat to the already established and powerful Roman Empire. Thus, according to historians, the first to reach Rome itself when they invaded the Roman Empire were the Visigoths. Apart from them, those who attacked the Empire and were a great threat were the Huns known for their cruelty, as were the Vandals, except for them and the Ostrogoth.