Fenthaza is a yuan-ti leader in Omu. She is a rival of Ras Nsi's, and would like to usurp him.
She tried to ambush the Wafflecrew in Omu, but the arrival of Klauth, the red dragon, ruined her attempt. [1] When Diath had his nightmare vision, Fenthaza asked him to take over the yuan-ti clan. She said that his ancient soul made him powerful. [2]