Mostique is Makak's friend and business partner. The playwright introduces him in the first scene, immediately after the prologue, when he arrives at Makak's house to accompany Makak to the market to sell their coal.

Though Walcott describes him as a "little man with a limp," Moustique seems to be the more proactive of the business partners. He berates Makak for not being ready on time—as always—and tells him that he has no time to go mad because it is market day and they have to make money. So far it has been a bad week for them.

As the scene continues, the reader finds out that Makak saved Moustique from life on the street:

You find me in the gutter, and you pick me up like a wet fly in the dust, and we establish in this charcoal business.

Written by poet and playwright Derek Walcott, Dream on Monkey Mountain is a play which was first published in 1970. The play tells the story of Makak, a poverty-stricken elderly man who makes and sells charcoal in a West Indian Island village. It opens just as Makak has been jailed for smashing up a cafe whilst drunk. Whilst in jail he has a dream—the Dream on Monkey Mountain.

Moustique is Makak’s business partner; he sells the charcoal that Makak makes. He was rescued by Makak four years earlier when he was drunk and in the gutter. He is a non-religious, small, black man who suffers from a twisted foot. Moustique feels that Makak is the only person who believes in him. Moustique dies twice in Makak’s dream.

When Makak’s dream ends at the end of the play, Moustique is at the jail begging for his friend to be released, not realizing that he already has been. He and Makak then return to Monkey Mountain.