Knockout (Kay, from Apokolips)
Knockout (Kay, from Apokolips) appears in 6 issues in grailworth's catalog, and was first published in 1994.
Every appearance we value
Birds of Prey (1999) 1 issue
Guy Gardner: Warrior (1994) 1 issue
Villains United (2005) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.