Creatures are the heart of player interaction in d20pro.  Creatures are possibly the most involved area of d20pro, and certainly have been the focus many of d20pro's features. 

d20pro automatically applies these modifiers to appropriate scores and totals for you:

• Size modifiers to AC and attacks
• Ability score modifiers to AC, attacks (once you specify which), and skills
• Base Attack Bonus, based on your class and level
• Spells per day based on class and level

The following information will help you move and interact with creatures in the game.  Combat is handled on its own page.