Meso'Clan was a Jem'Hadar soldier who served under First Goran'Agar.
In 2372, he followed Goran'Agar to Bopak III to be cured of his addiction to ketracel-white, which did not happen. Meso'Clan was assigned to stand watch over Julian Bashir and Miles O'Brien as they worked to find a cure. When Meso'Clan was hit by a plasma charge, which missed his femoral artery, but destroyed his knee joint. He was prepared to die at the hands of Temo'Zuma so there would be more White for the others, but Goran'Agar ordered his life to be spared and for Meso'Clan to be taken to their ship. (DS9: "Hippocratic Oath")
Meso'Clan was played by Jerry Roberts.
His name comes from the script.