These issues feature the very first Wolverine vs, Sabretooth fight in comic history. In the story, Sabretooth and Wolverine are already aware of each other and are revealed to the reader to be longtime enemies. This issue sparked numerous debates on the relationship of the characters. This included the possibility that Sabretooth was Wolverine’s father. The issue is part of the larger Mutant Massacre storyline the ran for several issues in X-Factor, New Mutants, Power Pack, Uncanny X-Men, and Thor.