Have everything ready before you start, these set quickly.
Line a baking sheet with parchment paper; set aside.
Freeze Ho Hos in the box for an hour or two, and then unwrap.
Pour jimmies into a small bowl.
Microwave green candy melts in a small bowl at 50% power for 1 minute; stir to combine. Continue to microwave for 20-30 second intervals, stirring, just until melted.
Dip 1/3 of a Ho Ho into the melted candy; allow excess to drip back into the bowl, scraping the top on the edge of the bowl. Immediately dip the head into sprinkles and lay onto the prepared baking sheet. Decorate with two eyes and two candy corns. Continue with remaining Ho Hos.
Once Ho Hos have set, use black icing to pipe a mouth onto each Ho Ho.