Whereas, within the three fully Mayan codices, the group of male deities is highly differentiated, the female functions seem largely to have been concentrated in the young goddess I (the 'White Woman') and the old goddess O (the 'Red Woman'). Missing from the codices, but important in Classic iconography are, amongst others, an ocean deity characterized by a shark tooth set in the mouth (the 'God I' of the Palenque Triad) and some of the Maya jaguar gods associated with warfare. The Postclassic Maya deity Kukulcan ('Feathered Serpent'), tutelary deity of the Toltec invaders and of the Maya kings deriving their legitimacy from them, is nearly absent from the codices.