Mutant Massacre (1986-1987) Writers Various Writers Artists Various Artists Genres Superhero Action Themes Action Horror Found Family Street-Level SuperTeams War Act 1 Uncanny X-Men Volume 1 #210 X-Factor Volume 1 #9 Uncanny X-Men Volume 1 #211 Act 2 X-Factor Volume 1 #10 New Mutants Volume 1 #46 Thor Volume 1 #373 Thor Volume 1 #374 Power Pack Volume 1 #27 Act 3 Uncanny X-Men Volume 1 #212 X-Factor Volume 1 #11 Uncanny X-Men Volume 1 #213