When Tails uses the transformation, he becomes Super Tails. This originally occurred in Sonic 3 & Knuckles, where the player needed the seven Super Emeralds to transform. Tails did not change color, but instead glowed white and was invincible and surrounded by four Flickies. His speed also increase while in this transformation. The Flickies surrounding him instantly attacking any nearby mechanical enemies, including bosses. Tails usually has golden yellow fur and ruby red eyes.
Tails's next use of super transformation occurs in Sonic Heroes. Here, the player only needs to obtain the seven Chaos Emeralds and complete the game to transform. His appearance is slightly modified from the original "Super" Tails, with the addition of a golden energy sphere and the removal of the Flickies. Tails is invulnerable in this form and gains an enhancement to his normal "Thunder Shoot" ability. However, the fact of this being a true super transformation is unknown, as it could be just Super Sonic lending Tails his power, as Super Sonic doesn't have the shielding around him.