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Not to be confused with the final boss of Lava Mountain.

Eggrobo (エッグロボ Eggurobo?), also spelled as EggRobo,[1] Egg Robo,[2] or Egg-Robo,[3] is a character that appears in the Sonic the Hedgehog series. It is a mass-produced Badnik model based on their creator, Dr. Eggman. In addition to being powerful soldiers on the battlefield, the Eggrobos are smart-bots designed to carry out tasks in Eggman's stead, making them a crown jewel in Eggman's attack force.[4]


Eggrobos are fully egg-shaped humanoid Badniks, based on Dr. Eggman's likeness. Their middle torso is red with yellow downward-pointing triangles on the front while their lower torso is black with two silver buttons on the front, making their design resemble Eggman's attire from the pre-Dreamcast era. Their gray head area is clean with two small red eyes and a flat jaw fastened by yellow bolts. On their back they have two yellow and gray rockets for flight. They also have thin robotic arms and legs with round shoulders, white gloves and black shoes with white straps.

Since Sonic Generations, the Eggrobos' design became more detailed. In the same game, a different colored version of the Eggrobo appeared. These variations have complete black and gray torsos with red cape-markings and hatches on their head.

Game appearances

Sonic the Hedgehog 3 & Knuckles


In Sonic's storyline of Sonic & Knuckles and the lock-on version Sonic the Hedgehog 3 & Knuckles, Eggrobos appear as standard enemies in Sky Sanctuary Zone where they are launched from the Death Egg. In gameplay, they hover in one place and shoot lasers from their pistols. Sometimes, they also emerge from towers with Animals escaping in their wake. The player can easily defeat them with a Spin Jump.

An Eggrobo has a more prominent role in the Knuckles' storyline of Sonic & Knuckles and Sonic the Hedgehog 3 & Knuckles. Accordingly, it was sent by Dr. Eggman to eliminate Knuckles, whom Eggman had deemed a potential threat.[5] It is also implied that the Eggrobo in Knuckles' story is the same one that appeared in Sonic's imperfect ending (if the Super Emeralds are not collected), implying that this Eggrobo survived the Death Egg's destruction. This antagonistic Eggrobo appeared in the opening of Knuckles' storyline in Sonic & Knuckles and Sonic the Hedgehog 3 & Knuckles. As Knuckles relaxed in the Mushroom Hill Zone, the Eggrobo dropped a bomb near him, but only made the Animals run away. Enraged, Knuckles sets off to defeat the Eggrobo.[5]

The Eggrobo rising again, from Sonic & Knuckles.

From there, the Eggrobo replaces Dr. Eggman amongst the bosses in every Zone up until the Hidden Palace Zone, excluding Flying Battery Zone.[note 1] These boss battles with the Eggrobo are more challenging and have alternate attack patterns. The Eggrobo was destroyed by Mecha Sonic in the Sky Sanctuary Zone when Knuckles escaped the Eggrobo's restraints just as Mecha Sonic charged at him, causing Mecha Sonic to destroy the Eggrobo and the Egg Mobile instead.

Sonic R

In Sonic R, the Eggrobo, renamed Eggman Robo (エッグマンロボ Egguman Robo?) in the Japanese version, appeared as an unlockable character. It is unlocked by getting all of the five Sonic Tokens on the Regal Ruin course.

Like Metal Sonic, Tails Doll, and Metal Knuckles, the Eggrobo is the robotic counterpart for Dr. Robotnik. Like Robotnik, it can fire Homing Missiles and hover across water, albeit only for about three seconds. Though it is a bit slow and clunky, it has superior cornering ability.

Sonic Adventure 2

In the original Dreamcast version of Sonic Adventure 2, the Eggrobo could be downloaded in Eggrobo Kart Racing as a playable character to use in the Kart Racing minigame.[6] In Sonic Adventure 2: Battle and the 2012 re-release, the Eggrobo could be unlocked in the racing minigame by clearing all of Rouge the Bat's missions. However, it was not part of the game's actual story or any normal stage.

Sonic Chronicles: The Dark Brotherhood

In Sonic Chronicles: The Dark Brotherhood, a nonfunctioning Eggrobo is found lying around next to a Sega Genesis and a Capsule in Metropolis.

Sonic Generations

In the PC/console version of Sonic Generations, the Eggrobos appear as enemies in Sky Sanctuary. Like in Sonic & Knuckles, they are launched from the rising Death Egg, as seen in Sky Sanctuary Act 1. Their attack pattern is relatively the same as in Sonic & Knuckles, but they do not contain any Animals.

The game introduces a darker variation of Eggrobos in Sky Sanctuary Act 2 and several Challenge Acts which missiles from their head that home in on the player, although these missiles are rather slow. A regular Eggrobo statue can also be unlocked in the Statue Room.

Sonic & All-Stars Racing Transformed

In Sonic & All-Stars Racing Transformed, Eggrobos make an appearance on the Sanctuary Falls track, which itself is based on the Sky Sanctuary Zone from Sonic & Knuckles. In this track, Eggrobos appear as both an obstacle and as a standard enemy like in their debut.

Super Smash Bros. for Nintendo 3DS

In Super Smash Bros. for Nintendo 3DS, the Eggrobos appear as common enemies in Smash Run. Unlike the original games, Eggrobos move around while in flight, and can fire their blaster at their targeted player.[7] In addition to Smash Run, it also appears as a trophy:

Name Picture Category Description Acquisition
Eggrobo Egg Robo EggRoboTrophy3DS.png Enemy These robots are one of Dr. Eggman's creations from the Sonic the Hedgehog series, where they tend to hover in the air and shoot at Sonic with their laser guns. In this game, they'll deliberately keep their distance while firing both short and long beams at the fighters. Get below them to avoid their fire, and then strike! These robots are one of Dr. Eggman's creations from the Sonic the Hedgehog series, where they tend to hover in the air and shoot at Sonic with their laser guns. In this game, they'll deliberately keep their distance while firing both short and long beams at the fighters. Get below them to avoid their fire, then strike! Random

Sonic Mania

In Sonic Mania, and its expansion Sonic Mania Plus, Eggrobos (here written as Egg-Robos[3]) make a few appearances, although not as regular enemies. The games also introduce a group of elite Egg-Robos known as the "Hard Boiled Heavies" who are essentially Egg-Robos modified by the Phantom Ruby.

Egg-Robos and Heavy Gunner chasing Knuckles in Studiopolis Zone Act 1, from Sonic Mania.

Four Egg-Robos appear during the boss battle with the Heavy Gunner in Studiopolis Zone Act 1. During the battle, they chase after the Auto Running player. One of them will hand the Heavy Gunner his bazooka, while another one pilots the Heavy Gunner's helicopter and rest of them fly around wielding batons. These Egg-Robos cannot harm the player and vise-versa. Instead, the player has to knock blue missiles back at each of them one at the time. These Egg-Robos do not release Animals after defeating them.

In Titanic Monarch Zone, Egg-Robos appear as drivers of high-speed transportation vehicles that move along rails. Hopping into these vehicles on one end of these rails will transport the playable character to the other end of the rail. However, the vehicle and the Egg-Robo will get smashed into a wall upon reaching the end, while the player gets tossed out of the vehicle without taking damage (if they have not jumped off earlier).

Mario & Sonic at the Olympic Games Tokyo 2020

In the Nintendo Switch version of Mario & Sonic at the Olympic Games Tokyo 2020, the Eggrobos appear as playable characters in the Volleyball 2D Event. During this event, the Eggrobos serve as Dr. Eggman's teammates. Notably, the Eggroboss possess their 16-bit sprite appearance from Sonic & Knuckles, albeit with some slight modifications.

Powers and abilities

The Eggrobos were intended to be the strongest of Dr. Eggman's robots, including Metal Sonic and Metal Knuckles, but failed to live up to the doctor's expectations.[4] Eggman also boasts of the offensive abilities he gave them, suggesting they pack lots of firepower.[4]

All Eggrobos are capable of flight using their rockets. However, their true strength lies in their design which minimizes air resistance, allowing them to move at speeds matching even Metal Sonic's.[4] Black variations of Eggrobos introduced in Sonic Generations can also launch rockets from their heads.


The standard Eggrobos' primary weapons are singular energy beam pistols, which they wield at all times. These pistols can shoot long-ranged neon-colored lasers.


Hard Boiled Heavies

Main article: Hard Boiled Heavies

The Hard Boiled Heavies.

The Hard Boiled Heavies are a line of five elite Egg-Robos that handled Dr. Eggman's most dangerous missions. This group consists of the Heavy Gunner, the Heavy Shinobi, the Heavy Magician, the Heavy Rider, and the Heavy King.

Originally normal Egg-Robos, all member of the Hard Boiled Heavies got transformed into customized and distinct versions of themselves after coming into contact with the Phantom Ruby. While this transformation made them more powerful, it also granted them free will, making it harder for Eggman to control them.

In other media

Sonic the Comic

EggRobo as it appears in Sonic the Comic.

An army of EggRobos appeared in the Sonic & Knuckles adaptation from Fleetway Editions' Sonic the Comic. In this series, the EggRobos could be controlled directly by Robotnik from his control room aboard the Death Egg II. Each model had cameras fitted into its eyes, allowing Robotnik to see everything, and a voice synthesizer allowed the doctor to communicate directly via the robots.[8] EggRobos could also function as regular Badniks without Robotnik's direct control.[9][10]

Archie Comics

Julian Snively stuck in a broken Eggbot in Archie Comics.

In the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, the Eggrobos were built by Snively Robotnik to be part of his own private army. They were intended to be used against Snively's uncle, Doctor Robotnik, and let him take over Mobius himself. Although Snively referred to them as "EggRobos" in their first appearance, Antoine D'Coolette called them "Eggbots," which was the name used in subsequent appearances.

Following the events of Worlds Collide, the Eggbots' history has become nearly identical to their game counterparts'.


3" action figures.

In celebration of the twentieth anniversary of the Sonic series, Jazwares produced a 3-pack of 3" action figures with Classic Dr. Eggman and two Eggrobos.



  1. During the boss battle of Flying Battery Zone Act 2 as Knuckles, Dr. Eggman is piloting Hang Mobile instead of Eggrobo. No reasons is known for this, but this is presumably due the lack of separated in-game sprites of Eggrobo for the vehicle.


  1. Sonic & Knuckles (Sega Genesis) North American instruction manual pg. 20.
  2. One of artworks showcasing Egg Robo from the Sonic World feature of Sonic Jam.
  3. 3.0 3.1 Sega. "Story So Far". Sonic Mania Introduction Manual. Sega. p. 1. "Some time after saving Angel Island, Sonic the Hedgehog and his best friend, Miles "Tails" Prower, are relaxing when Tails picks up a strange energy reading far away. Though different from the Chaos Emeralds, the reading is remarkably powerful, and Tails convinces Sonic to join him to check it out. Sonic and Tails take off on the Tornado towards the source, but sure enough, the evil Dr. Eggman has detected it too! Now it's a race between Sonic and Eggman to get there first and figure out what mysteries it holds. However, Eggman has been busy: he's just unleashed a new team of elite Egg-Robos to handle his most important tasks. They're called the "Hard-Boiled Heavies," and they're about to reach the source of the signal first! It's up to Sonic, Tails, & their newest ally, Knuckles the Echidna, to defeat the Hard-Boiled Heavies, unlock the secrets of the energy source, and stop Dr. Eggman!"
  4. 4.0 4.1 4.2 4.3 About Characters (Japanese). Sonic Channel. Archived from the original on 9 October 2009. Retrieved on 5 July 2015.
  5. 5.0 5.1 Sonic The Hedgehog 4. Sega. Archived from the original on 30 May 2013. Retrieved on 26 January 2015. "Feeling Knuckles has served his purpose, he sends EggRobot to eliminate this potential threat. EggRobo finds Knuckles relaxing in Mushroom Hill Zone - and attempts to eliminate him with a bomb - bot Knuckles, whether through luck or toughness, surivives the attack. Enraged, the wild Echidna sets off to defeat EggRobo."
  7. Super Smash Bros 3DS - Smash Run Gameplay w/ Direct Audio (E3 2014)
  8. Sonic the Comic #49, "Count Down to Disaster, Part 1"
  9. Knuckles Knock-Out Special, "Jake's Story"
  10. Sonic Holiday Special, "Sonic Vs Shortfuse"

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