Preheat oven to 350 degrees. Line a 9 x 9 inch cake pan with parchment so that it hangs over the edges.
In a microwave-safe bowl, heat 1 cup of chocolate chips with the butter for 1 minute. Stir until the bowl is no longer warm. If needed, microwave another 20 seconds. Stir until very smooth. Whisk in the sugar and brown sugar until dissolved.
In the bowl of a stand mixer, vigorously beat the eggs until very frothy, about 2-3 minutes. With the mixer running, stream in the chocolate mixture and beat until smooth. Beat in the espresso powder (if using) and vanilla.
To the butter and chocolate mixture, add the flour, cocoa powder, baking powder, and salt. Beat until just combined. Fold in the remaining 1/2 cup of chocolate chips.
Spread the batter into the prepared baking pan, from edge to edge, with a spatula. Bake for 25-30 minutes until an inserted toothpick emerges with just a few moist crumbs. Let cool, then cut into 9 large brownies (or 12 smaller ones). Set in the freezer for 15 minutes.
In a large microwave-safe bowl, pour in the chocolate and coconut oil for the coating. Heat for 1 minute, then stir. If needed, warm an additional 20 seconds. Stir until smooth. Let cool for 5 minutes. Meanwhile, line a large baking sheet with parchment.
Remove the brownies from the freezer. Dip each into the melted chocolate, using a fork to turn the brownies over to coat all sides. Let excess drip back into the bowl and set the brownies onto the parchment-lined baking sheet. Place in the fridge for 15 minutes.
To make the bandage icing, whisk together the powdered sugar and 1 tablespoon of cream. Add another tablespoon or two if needed to thin - you want the icing to be on the thicker side, like Elmer's glue. Transfer the icing into a ziptop bag with a corner snipped off, or a pastry bag with a thin tip attached.
Remove the brownies from the fridge. Draw on the "bandages" by making crisscross patterns with the icing. Attach eyeballs to the icing. Let harden for 10 minutes. Enjoy!