Pattanathil Bhootham

A college student whose fortunes rise after the urn is opened. He uses Jee-Boom-Ba’s gifts to impress Latha and advance socially, but his rapid ascent strains their relationship. He ultimately asks Jee-Boom-Ba to depart so he can win Latha back on his own terms.

Thangavel's daughter and Bhaskar's love interest. Her romance with Bhaskar is affected by Jee-Boom-Ba's closeness, leading to distance between them. She ultimately expresses her wishes and the genie steps back, allowing the couple to resolve their feelings.

A genie trapped in an urn for 3000 years, freed by the urn's discovery. He vows to help the two friends who released him, granting wealth and comfort, and later reassesses his role as their lives unfold. He eventually chooses to depart, returning only when his help is wholeheartedly desired.

Bhaskar's best friend who lives with him and supports the duo's new fortunes. He becomes a key observer of Jee-Boom-Ba’s influence and helps uncover the criminals’ schemes. He and his lover Saroja end up with a life together after the chaos subsides.

A superstitious businessman and father who believes the urn is a bad omen. His superstition drives the plot’s conflict and fuels the tension surrounding the urn and its powers. He remains a central figure as the family grapples with wealth, fate, and responsibility.

A partner in the family enterprise who secretly runs a smuggling racket with his son Mani and the gangster Pandi. He grows suspicious of Bhaskar's sudden rise and Jee-Boom-Ba's involvement, setting the stage for confrontation with law and order.

Mani's lover who becomes entangled in the criminals’ schemes. She learns of Mani's plans against Bhaskar and Latha and makes decisive moves to protect them, including killing Pandi to aid their escape.

Sabapathy’s son and a schemer who suspects Jee-Boom-Ba's true nature. He plans to coerce Jee-Boom-Ba into their criminal world and resorts to threats and subterfuge to secure his gains.

A gangster allied with Mani, eager to exploit Jee-Boom-Ba’s powers for their illegal activities. His alliance with Mani leads to dangerous confrontations, and he meets a final fate at the hands of Rita during the escape.

Seenu's lover who later becomes his wife. She is part of the emotional arc that closes with Seenu's marriage and a life beyond the immediate upheavals caused by Jee-Boom-Ba.

Referenced above under Jee-Boom-Ba; included here for completeness due to the genie’s central role in the plot.