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.

Sonic Jam

Sonic the Hedgehog 3 & Knuckles

Characters Sonic World

Super Knuckles : r/SonicTheMovie

Sonic the Hedgehog (Archie Post-Super Genesis Wave)

Sonic Frontiers Cover Story - Brave New World - Game Informer

Hyper Knuckles, World of Sonic Online Wiki

Knuckles the Echidna, World of Sonic Online Wiki

Sonic Robo Blast 2 - SRB2 Wiki