Final answer:
In Voltaire's novel 'Candide,' the protagonist is robbed by Bulgarian soldiers who take advantage of his naivety.
Step-by-step explanation:
The two characters who rob Candide are the Bulgarian soldiers. In Voltaire's satirical novel, these characters exploit Candide's naivety and steal his valuables after he has been conscripted into the Bulgarian army. Throughout the novel, Candide experiences a series of unfortunate events, including being robbed, which contribute to the book's themes of irony and critique of blind optimism.