Cern is always depicted as a young man in his prime, and frequently appears nude or scantily clad. In T'chaillish depictions, he usually has long golden hair and golden skin, emphasising his ties to Leu. Cern is a rash youth, whose frequently falls into trouble by failing to heed his elders, however, his folly can also have unexpectedly positive outcomes. Thus, the T'chaillish say that the coupling of a woman and a man is the folly that ensures the continuation of the human race.
Due to the nature of Cern's province, his stories often involve sexual exploits among both humans and the gods. These may involve his own exploits or those of others who come seeking his aid (as in the tale of Du'in and the Maiden). Cern may also use his powers to punish other, causing them to lust after another individual, as in the tale of Cerne and Fhatiem.
It appears that Cern is a relatively recent addition to the pantheon. Previously, his sphere of influence was attributed to Cerne who was portrayed as a hermaphrodite rather than male or female. This has made things somewhat challenging for historians, who are faced with piecing together the origin of various myths and determining who their orriginal players may have been.