Answer
Prabhakaran had three siblings, all brothers. Their names were Anton Balasingham, Selvarasa Pathmanathan, and Gajendrakumar Velupillai. Anton Balasingham served as the chief negotiator for the Liberation Tigers of Tamil Eelam (LTTE), while Selvarasa Pathmanathan was the head of the LTTE's financial wing. Gajendrakumar Velupillai was a senior member of the LTTE's intelligence wing.