Damages the player, who can lose shield, rings or even a life. Does not give anything.
that is seen to have the smiling face of
on the icon's green background.
Eggman Mark (, エッグマンマーク Egguman Māku ) ? also simply known as the  Robotnik monitor or the  Fake Item Box, is a "power-down" Item Box that appears in earlier games of the . While designed as an Sonic the Hedgehog series monitor power-up, it is actually a disguise hazard that can hamper the player.
The Eggman Mark is known to have the smiling face of
Dr. Eggman on its monitor's screen. By breaking its monitor, it will cause damage to the player, resulting in the loss of either a shield, Rings or even a life, should the player not have any Rings at the time. However, it does not have any effect if the player is invincible or in a Super State.
Sonic the Hedgehog 2
The first, official appearance of the Eggman Mark is
, where these objects can only be found in the 2 Player mode of the game. It can be seen if the monitor items are randomized. By breaking an Eggman Mark, the player loses his/her shield/rings or even a life as if attacked by a Badnik, which could strongly affect the outcome of the race. In the Sonic the Hedgehog 2 2013 re-release for mobile platforms, these monitors may also occasionally appear in character-specific paths in single-player.
Sonic the Hedgehog 3 & Knuckles
Robotnik monitors are seen in the game
and its add-on continuation Sonic the Hedgehog 3 . In these games, Robotnik monitors are more rare, but are set in inconsistent places. The first Eggman monitor can be found in an underwater section of Sonic & Knuckles Hydrocity Zone Act 2 in a corner on top of spikes. The next two Robotnik monitors can be found in a cavern of IceCap Zone Act 2, where monitors are normally frozen and the player should avoid breaking them. Another three Robotnik monitors are found in the second act of Launch Base Zone, where two are set at the foot of a tunnel and a single one in a corner with a Super Ring monitor, where the player pops out the water pipe.
The next Eggman Mark is found in
Mushroom Hill Zone, which is right next to a Super Ring monitor, which hides a spring beneath it. Next two are found in the second act of Lava Reef Zone, where these monitors are set at the foot of a blocked, hidden entrance, where only Knuckles can access them. The last one can be found in the second act of Death Egg Zone, which is near an anti-gravity switch and right next to a Super Ring monitor.
Monitors featuring the face of Dr. Robotnik are seen in
. However these monitor items act much different, as the player simply does not earn anything by breaking the monitor with this item. These items can also pop out from monitors with question marks, which randomly choose any of eight monitor items of the game.
Monitors with the Eggman Mark in
can be seen in Sonic Mania Titanic Monarch Zone.
One of the unused monitor items in the original are Robotnik monitors which, by hacking the game, do nothing after breaking it. The Robotnik item icon is different compared to ones in later games. In the 2013 re-release of original Sonic the Hedgehog Sonic the Hedgehog, it could be placed by using the game's Debug Mode and it functions like it later did in Sonic the Hedgehog 2 and Sonic the Hedgehog 3 & Knuckles.
By combining , three Robotnik monitors in Launch Base Zone act 2 are replaced with Sonic the Hedgehog 3 & Knuckles Super Ring and Invincibility monitors.
Eggman Marks should not to be confused with extra lives that Dr. Eggman earns in . These items are also represented by Eggman's head showing on the icon.
Sonic Adventure 2
Navigation Templates to Eggman Mark
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*Exclusive to the prototype versions of
Sonic the Hedgehog 2. ** Exclusive to the 2013 re-release version.
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Sonic & Knuckles
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Sonic the Hedgehog ( Super Sonic) | Miles "Tails" Prower ( Super Tails) | Knuckles the Echidna ( Super Knuckles) | Mighty the Armadillo* | Ray the Flying Squirrel*
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Gimmicks and obstacles
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Sonic Mania Plus only