Mix the crumbled cake with the frosting in a large bowl until the mixture is moist and holds together when pressed.
Roll the mixture into small balls about 2 cm in diameter, pressing firmly to ensure they keep their shape.
Insert a toothpick into each cake ball, then place them on a baking sheet lined with parchment paper and chill in the freezer for at least 30 minutes.
Gently melt the dark chocolate over a double boiler or in a microwave, heating in short bursts until smooth and glossy, around 45°C (113°F).
Dip each chilled cake ball into the melted chocolate, using the toothpick to fully coat it, then gently tap off any excess chocolate.
Place the coated cake pops onto a styrofoam block to dry completely, about 15-30 minutes, until the chocolate is firm and shiny.
Decorate the cake pops immediately with candy eyes, sprinkles, or colored icing to create spooky faces or designs.
Optionally, add a light dusting of edible glitter for an extra spooky shimmer.
Allow the decorations to set for a few minutes, then serve your creepy, delightful Halloween cake pops.