"The Black Arm Invasion" is the Seventh episode in the animated series, Sonic Adventures. It first streamed on YouTube on 10th September 2017 worldwide and it is based on Shadow the Hedgehog.


Shadow' Birthday is coming up, but he has to save the city from the army of Black Arms lead by the evil Black Doom.


  • Shadow the Hedgehog
  • Sonic the Hedgehog
  • Tails the Fox
  • Knuckles the Echidna
  • Amy Rose
  • Sticks the Badger
  • Rouge the Bat
  • E-123 Omega
  • Blaze the Cat
  • Vector the Crocodile
  • Charmy Bee
  • Espio the Chameleon
  • Mighty the Armadillo
  • Dr Eggman
  • Black Doom (Only appearacne)
  • The Black Arms (First appearance)


While Shadow was minding his own business, huge blood red red clouds circled over the city and coming out down from them were black alien known as the black arms, Shadow then questions out who the black arms are and then their leader Black Doom comes and tells Shadow to find the 7 Chaos emeralds and bring them to him and then teleports away, then G.U.N. calls Shadow to Fight off the Black arms and then Shadow tells G.U.N. that he will use the 7 Chaos Emeralds to defeat the black arms. Shadow collects a Chaos Emerald while helping Sonic fight the black arms, then after being teleported by Black Doom as punishment, Shadow finds another chaos emerald, Shadow then gets help from Tails while fiding the 3rd chaos emerald, seeing that Shadow is still working for G.U.N. Black Doom confronts Shadow and Rouge who easily escape from Black Doom. The Next day, it was Shadow's Birthday and Shadow sees Knuckles, then Shadow finds the fourth Emeralds on the cliff side and then uses Chaos control to warp to the Krusty Vector. There, Shadow helped Vector, Charmy, Espio and Mighty hack into Eggman’s Computer. While they did that, Eggman approaches to stop them from Hacking his Computer. After beating Eggman, Shadow collects the fifth emerald with some help from Amy and then Shadow arrives Eggman’s Base, luckily Shadow and Omega take the 5th chaos emerald from Dr Eggman cand then after finding the sixth emerald at lava shelter, Eggman Attacks Shadow and Omega again. After beating Eggman again and Collecting the last Emerald, Black Doom approaches in rage, seeing that Shadow has disobeyed him again, But then Sonic, Tails, Knuckles, Sticks and Amy came to Help Shadow but then Black Doom Uses the Emeralds to cause Chaos Control, Warping the 7 of them to Black Doom’s Fortress, the Black Comet and warping it to the surface of the Earth. After realising Black Doom’s Evil Plan, Shadow fights Black Doom who then tears Shadow's uniform and states that Shadow was created from his blood and that he can't escape him or his past. Shadow then stated to Black Doom That he was created from Professor Gerald's blood as well, making him immune to Black Doom's Mind Control. Then Black Doom easily escapes until Shadow uses the Chaos Emeralds to Turn into Super Shadow and then Fights Black Doom. After Killing Black Doom, Shadow Uses Chaos Control to Warp Sonic and the Gang out of the Comet and warping it back to space and then Shadow uses the Space Colony ARK's Eclipse Cannon to Destroy the Black Comet. After Shadow's Chaos Control restored the City back to Normal, Shadow Returns to Earth Stating that his Mission to Defeat the Black Arms is Complete and then he celebrates the rest of his birthday before the night falls and then the episode ends with them watching Knuckles Chase Eggman after Hearing him Saying “And Now I’ll be taking the Chaos Emeralds, If You Don’t Mind?”


Black Arms-0
Black Doom
Black Comet
Black Comet TakeOver
Shadow attacks Black Doom
Black Doom's Wrath
Shadow Torn 1
Shadow Torn 2
Black Doom's Escape
Shadow Torn 3
Super Shadow VS Black Doom 1
Chaos Spear
Super Shadow VS Black Doom 2
ARK VS Black Comet
Black Comet Destoryed


  • This episode is based on Shadow the Hedgehog.
  • This episode marks Only Appearance of Black Doom and also the first appearance of the Black Arms.
  • The First half of the Final Battle against Black Doom is a reference to the Teen Titans Episode, Birthmark.
  • This is the first episode to focus around Shadow.
  • This is the First Episode where Shadow's Chest Fur is seen.


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