Hyper Knuckles, World of Sonic Online Wiki

Hyper Knuckles is a hyper transformation of Knuckles the Echidna, when getting 7 Super Emeralds. Like Super Knuckles, Hyper Knuckles does not receive any physical transformation, but his fur pulses from red to pink. Unlike his Super State, however, any fast movement he makes leaves after-images.

The Sonic the Hedgehog Wiki – Sonic City

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

Sonic Mania - Wikipedia

Hyper Knuckles (Archie) Sonic News Network+BreezeWiki

Hyper Knuckles (Archie) Sonic News Network+BreezeWiki

Customization, Exclusive Acts & More! Game Informer Takes A Deep

Sonic Origins Plus

Sonic.EXE - The Game - ABGames

Super Knuckles : r/SonicTheMovie

Sonic Frontiers Cover Story - Brave New World - Game Informer

Why Is There So Much Sonic the Hedgehog Fetish Art Online?

Knuckles the Echidna - Concept: Mobius