TV Astonishing X-Men - Season 4 Episode 4 : Unstoppable, Episode 4 Astonishing X-Men - Season 4 Episode 4 : Unstoppable, Episode 4 5.7/10 by 16 users The X-Men defend Colossus as the Breakworld warlords demand his death to save their planet. Details Casts Posters Images Title Astonishing X-Men - Season 4 Episode 4 : Unstoppable, Episode 4 Alternative Titles Marvel Knights - Astonishing X-Men First Air Date 2009-10-28 Last Air Date 2013-05-13 Number of Episodes 25 Number of Seasons 4 Genres Action & Adventure, Animation, Sci-Fi & Fantasy, Networks iTunes Store, Casts Trevor Devall, Brian Drummond, Lara Gilchrist, Ron Halder, Laura Harris, Mark Hildreth Plot Keywords , Piotr Rasputin / Colossus (voice) Trevor Devall Logan / Wolverine (voice) Brian Drummond Emma Frost / Perfection (voice) Lara Gilchrist Dr. Hank McCoy / Beast (voice) Ron Halder Kitty Pryde / Shadowcat (voice) Laura Harris Scott Summers / Cyclops (voice) Mark Hildreth Episodes List Astonishing X-Men Season 4 :Episode 1 Unstoppable, Episode 1 Unstoppable, Episode 1 2013-05-13 Facing a powerful new enemy, the team of mutant superheroes find themselves further imperiled when a "cure" for mutants is discovered. Astonishing X-Men Season 4 :Episode 2 Unstoppable, Episode 2 Unstoppable, Episode 2 2013-05-13 Facing a powerful new enemy, the team of mutant superheroes find themselves further imperiled when a "cure" for mutants is discovered. Astonishing X-Men Season 4 :Episode 3 Unstoppable, Episode 3 Unstoppable, Episode 3 2013-05-13 Facing a powerful new enemy, the team of mutant superheroes find themselves further imperiled when a "cure" for mutants is discovered. Astonishing X-Men Season 4 :Episode 4 Unstoppable, Episode 4 Unstoppable, Episode 4 2013-05-13 Facing a powerful new enemy, the team of mutant superheroes find themselves further imperiled when a "cure" for mutants is discovered. Astonishing X-Men Season 4 :Episode 5 Unstoppable, Episode 5 Unstoppable, Episode 5 2013-05-13 Facing a powerful new enemy, the team of mutant superheroes find themselves further imperiled when a "cure" for mutants is discovered. Astonishing X-Men Season 4 :Episode 6 Unstoppable, Episode 6 Unstoppable, Episode 6 2013-05-13 Facing a powerful new enemy, the team of mutant superheroes find themselves further imperiled when a "cure" for mutants is discovered. Astonishing X-Men Season 4 :Episode 7 Unstoppable, Episode 7 Unstoppable, Episode 7 2013-05-13 Facing a powerful new enemy, the team of mutant superheroes find themselves further imperiled when a "cure" for mutants is discovered.