In a bowl, mix together the cream cheese and Italian dressing mix. I use latex free disposable kitchen gloves & just use my hands for this part, but you can use a spatula too. Form it into a ball. I like for mine to sit in the fridge for a couple hours after this point for the flavors to meld, but it's not absolutely necessary. It just tastes better :)
Next, it's time to bat-ify the cheeseball!
Crush up some of the blue tortilla chips - about 1/2 cup's worth. I just gave mine a quick spin in the food processor but you can easily crush them with your hands, or in a ziplock bag with a rolling pin to crush them. Roll the cheeseball in the crushed blue corn chips, covering all sides. Using 2 full chips, insert them on either side of the ball for the bat's wings. I like to find two tortilla chips in the bag that are slightly curled because they look a little more 'wingy' to me.
For the eyes, insert two pimento stuffed green olives in the front of the cheeseball.