Darkspine Sonic, Sonic Pokémon Wiki

Darkspine Sonic (ダークスパインソニック, Dākusupain Sonikku) is one of Sonic the Hedgehog's transformations, appearing in Secret Rings Saga. Rather than using the Chaos Emeralds, he uses the World Rings of rage, hatred, and sadness to transform. In this form Sonic's personality is slightly more sinister and violent due to absorbing the World Rings of rage, hatred, and sadness, which are all negative emotions. He becomes this form in the final battle against Alf-Layla-wa-Layla, an enhanced form of Erazor Dj

Final Boss Fight - Sonic Frontiers Guide - IGN

Who do you think would win Super Sonic, Darkspine Sonic, Excalibur

Super Smash Bros. Infinite Wii - GameBrew

This should be Sonic's alt costume…I think. : r/SSBPM

Transformações de Silver, Wiki

Darkspine Sonic Event Now Running in Sonic Forces Mobile - Games

Vampire Savior/Aulbath - Mizuumi Wiki

Who would win, Hyper Sonic or Hyper Shadow? - Quora

Alternate costume (SSBU) - SmashWiki, the Super Smash Bros. wiki

M10 - Bulbapedia, the community-driven Pokémon encyclopedia