AI value
AI Value is characteristic of creatures "hidden" in the game mechanics. It is used to determine total army strength, which is used in the calculations for the Diplomacy secondary skill. Creatures sacrificed at the Altar of Sacrifice grant experience equal to 12.5% of their AI Value.
Fight Value is another "hidden" creature characteristic. It is used to determine unit strength, which is used in the calculations for units attack priority in battle (after Speed is taken into account) and the creature loss when visiting a whirlpool (without Sea Captain's Hat or Admiral's Hat).
Random Map Generator produces content and zone guards based on their RMG Value, which is a linear function of the AI Value: RMG_Value = AI_value / 2.5 + 2300.