According to Jain tradition, Shrenik Maharaj (also known as King Bimbisara) had a son named Kunika (also spelled as Konik or Ajatashatru). The most prominently mentioned son is Kunika/Ajatashatru. Jain texts mainly reference Kunika, but some texts mention that Shrenik Maharaj had other sons as well, though their names are not as widely noted or emphasized.

If you are asking about the brothers of Kunika (Konik), Jain scriptures do not provide detailed accounts or names of his brothers. The focus is primarily on Shrenik Maharaj and his son Kunika in the context of Jain narratives, particularly their interactions with Lord Mahavira.

Therefore, Shrenik Maharaj's son Kunika's brother is not explicitly named or detailed in Jain scriptures.