Egg Knight

You may be looking for E-1001 Egg Pawn.

The Egg Knight is a Badnik created by Eggman. They are known to be the leaders and variations of E-1001 Egg Pawn.

Description
Egg Knights are special Egg Pawns, mostly because of its design. When an Egg Knight are in a group with regular Egg Pawns, you can defeat the Egg Knight to destroy all of the surronding Egg Pawns.

Appearance
Egg Knights have the same model design as an Egg Pawn, but is mostly gold instead. They have blue eyes, a red nose and lines on its shoes, purple headlights on its chest, and have a horn-like spike on the top of its head. The bottom torso is black.

Trivia

 * These are the only variations that is exclusive to Sonic Heroes that does not get a Sonic Rivals 2 card.