Egg Knights have the same base design as an Egg Pawn, but are mostly gold instead. They have cyan eyes, a red nose, red lines on their shoes, purple headlights on their chests and a horn-like spike on the top of their heads. The bottom of their torsos is also black.
In Sonic Heroes, the Egg Knights appear as enemies. They are uncommon and are generally seen in the later-half of the stages (from Frog Forest and onwards).
In gameplay, the Egg Knights behave much like the Egg Pawns, except that they have slightly more health than the Egg Pawns. They can come equipped with a variety of weaponry. These weapons affect their attack patterns and give them a wider attack range. These include:
Egg Spears: Egg Knights armed with long lances. If they detect the playable characters, they will start charging at them. The Egg Spears allow them to increase their range of attack.
Egg Bazookas: Egg Knights armed with heavy laser-firing bazookas. These enemies need some time to load their Egg Bazooka, after which they will fire a laser that will quickly fly towards the playable characters.
Egg Guns: Egg Knights armed with high-speed machine guns. These enemies shoot long series of bullets at the playable characters.
Egg Knights that are not carrying any weapons fight with their fists. If they detect the playable characters, they will start charging at them. Some Egg Knights also wield shields along with their weapons. Those Egg Knights that wield shields can use them to negate the damage they would otherwise receive. While these shields can be destroyed with enough attacks, the player can also use the Tornado Jump or a Homing Attack with three Power Cores to blow them away. These shields come in two different styles:
Smooth shields: Smooth, rectangular shields. These allow the Egg Pawn to block one blow from a Power Type character before they break.
Spiked shields: Spiked shields that can block a number of blows from a Power Type character. The more blows they receive, the more cracks they will display until they are destroyed altogether. They can also deal additional damage if the player runs into the Egg Pawn wielding it or jumps into them with a Homing Attack.
Egg Knights are usually found in positions where it is difficult to reach them without alerting any regular Egg Pawns nearby. They usually patrol their immediate area, with a group of Egg Pawns under them command surrounded it. Destroying an Egg Knight will also destroy all the Egg Pawns nearby that accompanies it. Destroying an Egg Knight awards the player with 400 points.
Egg Knights are rarely seen in large groups; usually, there is only one such Badnik per group of Egg Pawns. The exceptions to this include some of the boss fights in the game (e.g. Robot Carnival, Robot Storm and the Egg Emperor), where they can attack the player in large groups.
In Sonic Rivals, the Egg Knight appears on the 108th collectible card in the game.
Powers and abilities
Compared to most machines Eggman has produced, the Egg Pawns are weak robots, and rely more on the weapons and tools they wield.
Weapons and equipment
The Egg Knights' standard arsenal include lances named Egg Spears, single-shot recoilless rifles named Egg Bazookas, and automatic blasters named Egg Guns. They also occasionally carry shields of varying durability.