A humanoid species with rough, scaly faces and a ridge down the brow, often seen on Deep Space 9's Promenade and usually cast as mercenaries, smugglers and hired muscle.
The Markalians are one of the stock alien designs of Deep Space Nine, present in the background of Quark's bar and the Promenade from Emissary onwards. They have greyish, pebbled skin and a line of bony ridges running up the forehead.
Those given names tend to be criminals. Durg, in The Passenger, is a mercenary hired through Quark to hijack a shipment of deuridium. In Hippocratic Oath, Worf's suspicions are aroused by Regana Tosh, a Markalian smuggler dealing with Quark, and he blunders into an undercover operation that Odo has been running. Another works for the Albino in Blood Oath.
Almost nothing has been established about their homeworld or government. The same make-up was reused for visitors to Rigel X in the Enterprise pilot Broken Bow, which suggests the species was already travelling the trade routes in the 22nd century.