Jean-Baptise Grenouille
The protagonist of the novel.
Grenouille possesses an absurdly keen sense of smell, no smell of his own, and an intense hatred of humanity, which combined leads him on a journey to create the perfect scent that will allow him to control humanity.
He's likened to a tick as he's small, inconspicuous, and sucks the lifeblood out of his victims.
He realizes his purpose in life when he discovers the intoxicating scent of the girl from the rue de Marais, and vows to become a master perfumer.
He sees nothing wrong or strange about committing murder; he only desires to possess the scent of his victims.
He learns to create perfumes conventionally under Baldini, spends seven years wallowing in his hatred of humanity in a remote volcano and his inner palace,
and finally sets about creating a perfume that will allow him complete power over people in the town of Grasse, created from the scents of 25 murdered virgins.
Grenouille believes that having this power will make him happy, but when he deploys his perfume, he finds his hatred for humanity overshadows any pleasure he experiences from his success.
He then uses his perfume to commit suicide in Paris, destroying both himself and his powerful perfume in the process.