Justice is a twelve-issue American comic book limited series published bimonthly by DC Comics from August 2005 through June 2007, written by Alex Ross and Jim Krueger, with art also by Ross and Doug Braithwaite. Its story involves the superhero team known as the Justice League of America confronting the supervillain team the Legion of Doom after every supervillain is motivated by a shared dream that seems to be a vision of the planet's destruction, which they intend to avoid.

Parasite is the name of several supervillains appearing in American comic books published by DC Comics. Each iteration of the character has the ability to temporarily absorb the life force, attributes, memories, and superpowers of anyone through physical touch. The most well-known and recurring incarnation is Rudy Jones, who has become one of Superman's most enduring enemies and belongs to the collective of adversaries that make up his rogues gallery. In 2009, Parasite was ranked as IGN's 61st Greatest Comic Book Villain of All Time.