Character Relationship Map: Billa

Characters

• Billa / Rajappa (played by Rajinikanth) — protagonist

  Billa is a feared ganglord pursued by the police; after he dies during a chase, DSP Alexander recruits Rajappa, a kindhearted man who looks exactly like him, to take his place as an informer. Rajappa...

• Radha (played by Sripriya) — supporting

  Radha is the sister of a man killed by Billa and joins Billa's gang to seek revenge. She initially mistakes Rajappa for Billa, but later helps him escape and supports his efforts to establish his true...

• DSP Alexander (played by K. Balaji) — supporting

  DSP Alexander is the police officer pursuing Billa and hopes to capture him alive to uncover the source of the criminal network. After Billa dies, Alexander recruits Billa's lookalike Rajappa and trai...

• Gokulnath (played by Major Sundarrajan) — supporting

  Gokulnath is introduced as an Interpol officer, but Rajappa eventually discovers that he is secretly the underworld crime boss behind the criminal network. He is responsible for Alexander's death and...

• Reena (played by Helen) — supporting

  Reena is the fiancée of a man killed by Billa and becomes one of his enemies. She seduces Billa in an attempt to help the police arrest him, but he outsmarts her and escapes. Reena is killed during th...

• Rajappa's friend (played by Manorama) — supporting

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Billa / Rajappa → Gokulnath (Power Crime Boss And Operative) — Billa operates within a hierarchy ultimately controlled by Gokulnath.

  Billa is reported to work under a hidden criminal authority, and Rajappa later discovers that Gokulnath is the real crime boss behind the network.

• Billa / Rajappa → Reena (Romantic Adversarial Seduction) — Reena uses apparent romantic interest as a weapon against Billa.

  Reena seduces Billa in an attempt to help the police arrest him, but Billa outsmarts her and escapes, causing her death.

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Gokulnath → DSP Alexander (Conflict Murderous Rival) — Their conflict represents the struggle between the hidden criminal authority and law enforcement.

  The plot reveals that Gokulnath is responsible for Alexander's death during the police raid and later becomes the target of the investigation.

• Radha → Gokulnath (Conflict Adversary) — Radha directly supports the effort to bring down Gokulnath's organization.

  Radha fights through the criminal network and obtains the diary while Rajappa exposes Gokulnath's hidden criminal identity.

• Radha → DSP Alexander (Alliance Investigative Ally) — Alexander's confirmation changes Radha's attitude toward Rajappa.

  Alexander confirms to Radha that the man before her is Rajappa rather than Billa, helping her accept the impersonation.

• Billa / Rajappa → DSP Alexander (Conflict Pursuer And Fugitive) — Alexander treats Billa as the key to uncovering the wider criminal network.

  DSP Alexander leads the effort to capture Billa alive, but Billa dies during a police pursuit before Alexander can question him.

• Billa / Rajappa → Radha (Conflict Enemy) — Their relationship shifts from revenge-driven hostility to cooperation after Radha learns Rajappa is impersonating Billa.

  Radha seeks revenge after Billa kills her brother and infiltrates his gang to bring him down. Later, she attacks Rajappa while believing he is Billa.

• Rajappa's friend → Billa / Rajappa (friend)

Story Analysis

A police impersonation operation turns a simple man into a criminal double whose struggle for identity exposes the hidden power behind the underworld.

Plot Progression

1. The Ganglord's Reckoning — Billa rules his organization through fear and kills a subordinate who wants to leave. This creates new enemies in Radha and Reena while keeping the police focused on him.
2. A Death That Changes Everything — Reena's trap fails, and Billa dies during a police pursuit before DSP Alexander can question him. Alexander hides the death and searches for a lookalike who can continue the investigation.
3. The False Billa — Alexander recruits Rajappa for an undercover operation and places him inside Billa's criminal network. Rajappa uses the diary and Radha's presence to navigate the dangerous impersonation.
4. Identity Under Siege — Rajappa claims that his memory has returned, allowing the gang to accept him as Billa temporarily. The police raid destroys his cover, Alexander dies, and Rajappa is arrested without a confirming witn...
5. The Real Diary — Rajappa escapes the conflict surrounding the stolen diary and discovers Gokulnath's hidden position at the top of the criminal network. His deception preserves the real evidence and clears his name.