Story: "Welcome to the Party!" (22 Pages)

Credits:

Karl Kesel (plot, script)
Terry Dodson (pencils)
Rachel Dodson (inks)
Ken Lopez (letters)
Alex Sinclair (colors)
Matt Idelson (edits)

Feature Character:

Harley Quinn

Guest Stars:

Bonny Hoffman
Carmen Leno (as the Body Doubles; both last in Body Doubles #4)
Catwoman
Hope
Mercy (both last in ...; both next in ...)
Stompa
Mad Harriet
Bernadeth
Lashina (as the Female Furies)
Thorn II (last in Adventures of Superman #587; next in ...)

Supporting Character:

Poison Ivy (last in ...; next in ...)

Villains:

Jack Happi
Frank Surley
Bo Donner
Dr. Carrie Chispazo (first appearance; a former FBI profiler)

Other Characters:

Tony (first appearance; a guard at the Cartwrights' mansion)
Oscar Cartwright
Anya Cartwright (both behind the scenes)