Oxygen

A disciplined officer who hides his true identity as Krishna Prasad to infiltrate a criminal network led by Raghupati. After his brother Ajay’s smoking-related death, he launches Mission Oxygen to expose opium-laced cigars and avenge his family. He reveals his double life and destroys the villains, ultimately making a supreme sacrifice.

Sanjeev’s wife-to-be who initially resists leaving her family but gradually joins the mission. She helps retrieve the cigar formula and participates in the live broadcast to expose the conspirators. Her growth and support become central to the film’s emotional arc.

Village landlord and patriarch who uses wealth and influence to control his clan. He orchestrates murders to protect his business empire and the Tiger Brand conspiracy. His downfall culminates after a stroke and exposure of his true nature.

Raghupati’s nemesis who carries out attacks on the family to defend his own interests. He embodies the ongoing threat of violence that drives the plot and escalates the stakes.

One of the killers hired to eliminate Sanjeev’s family and protect the Tiger Brand’s secret. His presence represents the reach of criminal activity and the corruption of authority, ultimately meeting a violent end.

An officer involved in the conspiracy who teams with Amith and Chalapathi. His role underscores the theme of deception within the machinery of power and law.

Raghupati’s ally who helps sustain the family’s criminal operations. His role highlights how power structures extend beyond a single leader and contribute to systemic corruption.

A microbiologist and Sanjeev’s ally who helps uncover the cigars’ formula. Her sacrifice catalyzes Mission Oxygen and the unfolding revelations about the conspiracy.

Sanjeev’s brother who dies due to lung cancer caused by chain-smoking. His death sparks the investigation into the Tiger Brand, fueling Sanjeev’s quest for truth and vengeance.

Raghupati’s brother whose murder signals the expansion of the family’s criminal network and propels the investigation toward the factory and its secrets.

Ganapathi’s involvement represents the crumbling of the family’s criminal infrastructure as the conspirators are drawn into the confrontation with Sanjeev.