What is the name of Sonic's super transformation using Chaos Emeralds?

Sonic’s super transformation using the Chaos Emeralds is called Super Sonic. In the main game series, Sonic typically transforms after collecting all seven Chaos Emeralds, becoming faster, stronger, and surrounded by a bright golden aura.

Super Sonic first appeared in Sonic the Hedgehog 2. The transformation is usually associated with collecting 50 Rings and obtaining the seven Emeralds, though the exact requirements and gameplay effects vary between titles. In many games, Super Sonic can fly or move rapidly, but his power drains Rings over time, making the form temporary.

The name “Hyper Sonic” is a common mix-up because it is a separate transformation that appeared in Sonic 3 & Knuckles after collecting the Super Emeralds. Dark Sonic is an anime-only form from Sonic X, while Ultra Sonic is associated mainly with non-game media. Super Sonic is the standard, canonical Chaos Emerald-powered transformation and has become one of the franchise’s most recognizable forms.