According to the Sectaurs Wikipedia entry, this line was released in 1985 rather than 1984 as indicated by the copyright on the packages.
HEROIC SECTAURS OF THE SHINING REALM!
ZAK fears nothing and bows to no one—except his friend and leader, Dargon. With his deadly VENGUN and rapid-firing SLAZOR, ZAK is the fastest and most feared marksman of the Shining Realm. BITAUR, ZAK's hot-tempered companion, is never far from his master's side in battle. Only ZAK can stop BITAUR's deadly jaws once the fighting begins!
