Big B is a stylish action thriller that marked a significant shift in Malayalam cinema with its slick visuals and gritty storytelling. The content is dark and intense, focusing on themes of vengeance and familial bonds. The screenplay is tight, with a non-linear narrative that gradually reveals the protagonist's motivations and the stakes involved.

The pacing is deliberate, with the first half building up the atmosphere and character relationships, while the second half delivers high-octane action and emotional payoffs. The film's first half is atmospheric and moody, setting the tone with minimal dialogue and strong visual storytelling. The second half escalates the tension with well-choreographed action sequences and confrontations.

Though the film does not emphasize songs, the background score by Alphonse Joseph (uncredited in the prompt but known) is a standout, enhancing the mood and intensity throughout. The music complements the film’s dark tone, with a mix of haunting melodies and rhythmic beats that elevate the narrative tension. Cinematography by Sameer Thahir is a major highlight, capturing the urban landscape with a noir-like aesthetic that adds to the film's unique style.

Mammootty: Powerful and brooding portrayal of Bilal, carrying the film with his intense screen presence.

Nafisa Ali: Strong supporting role with emotional depth.

Manoj K Jayan: Convincing antagonist with a menacing edge.

Mamta Mohandas: Effective in her limited but pivotal role.