Karna was originally named Vasusena at birth, given by his biological mother Kunti. He was born with natural armor (Kavacha) and earrings (Kundala). The name Vasusena means 'one who owns wealth like the Vedic gods Vasus'. Duryodhana, Bhima, and Yudhisthira were never known as Vasusena in the Mahabharata.