Explanation: Mahapadma Nanda was also called Ugrasena in Pali texts, because of his large army.

• According to the Brahmanical texts, he belonged to a low caste or at least a non-Kshatriya caste, while according to the Puranas, he was the son of a king of the Shishunaga dynasty by a Shudra woman, and thus the Nandas were considered adharmika (those who do not follow the norms of Dharma).
• Buddhist texts describe the Nandas as belonging to annatakula (of unknown lineage).

Source: Poonam Dahiya