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This character exists primarily or exclusively within the Sonic Boom continuity.
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.

The Tunnel-Bot is a boss that appears in the Sonic Boom series. It is a colossal and mass produced crab/spider-based robot model made by the Ancients, which is tasked with protecting the Tidal Crystal in Ocean Purification Plant.

Appearance[]

The Tunnel-Bot is rather basic, yet sinister and large in appearance. Its entire body is shaped as a short red, black and brown ellipsoid, similar to a head, and it has an extra metal layer on its upper half, giving it the appearance of a thick brow ridge. It also has two small red eyes, four flaps on top of its head and two short cylinders with rotating saw blades on its lower front. Through its middle and center, it has one large saw blade and on its lowest front it has a long outward blade.

The Tunnel-Bot possesses limbs in the form of six thin mechanical tentacles. These tentacles are located on its back and have three claws on each end.

History[]

Games[]

Sonic Boom: Rise of Lyric[]

When Sonic and Amy came to Ocean Purification Plant and took the Tidal Crystal, the Tunnel-Bot instantly reacted to the theft and began relentlessly pursuing the duo, but they managed to escape its grasp every time.

Two more Tunnel-Bots joined with the first one and fought Sonic and Amy when they escaped with the Angler but they were all destroyed by the duo at the end.

Powers and abilities[]

The Tunnel-Bot possesses both super strength and high durability, being able to smash through metal doors and foundations without slowing down at all. It is also remarkably fast despite it size, capable of keeping up with both Sonic and Amy.

Thanks to its nimble and sharp limbs, the Tunnel-Bot is skilled at climbing and can scale virtually any surface. Its body is also covered in several rotating and immensely durable saw blades, allowing it to burrow and cut through even metal with ease. It also moves equally well underwater, where it is able to combine its attacks with other Tunnel-Bots for greater effectiveness.

Battle[]

Ocean Purification Plant[]

The Tunnel-Bot is the boss of Ocean Purification Plant and the fifth boss of Sonic Boom: Rise of Lyric. It is encountered multiple times over the course of Ocean Purification Plant, and is fought with Sonic and Amy.

Boss guide[]

The Tunnel-Bot is encountered a total of three times over the course of Ocean Purification Plant. The first encounter happens after collecting the fake Tidal Crystal at the start of the level. There, the Tunnel-Bot will start chasing Sonic and Amy through a corridor. Since the player cannot fight it at this point, their only options is to run away. If the Tunnel-Bot catches up with the characters however, it will instantly defeat them upon making physical contact. During this chase, the Tunnel-Bot will also try to reach the player with its tentacles, before starting to climb the walls and ceiling. Eventually though, it will start cutting through the floor with its saw. After a while however, the playable characters will pass through a door that closes behind them, leaving the Tunnel-Bot trapped on the other side and ending the chase section.

The next encounter with the Tunnel-Bot takes place when the player tries to activate the toxic waste drain mechanism with the Enerbeam. Here, the Tunnel-Bot will appears in front of the arena, along with an endlessly spawing group of Destruction Troops. This time though, it can be damaged, and its attacks will not instantly defeat the player. In order to deal damage to the Tunnel-Bot, lasso the Destruction Troops with the Enerbeam and throw them into the Tunnel-Bot. Meanwhile, the Tunnel-Bot will swing its tentacle from time to time. This attack covers the entire arena, but the player can avoid it ny jumping over it. After receiving enough hits, the Tunnel-Bot will retreat, allowing the player to press on.

The third and final encounter with the Tunnel-Bot occurs after completing a platforming section and entering a corridor opened with the Enerbeam. Here, the player must run away from the Tunnel-Bot through the corridor, like in the first encounter. Along the way, the Tunnel-Bot will again climb walls and ceilings as it pursues the characters, but it will no longer cut through the floor. Instead, new obstacles appear along the corridor in the form of blue vertical pipes and green horizontal pipes that must be avoided. Should the characters collide with them, they will be slowed down, thereby putting them at greater risk of being caught by the Tunnel-Bot. Additionally, the Tunnel-Bot will once again instantly defeat the characters if it touches them. At the end of the corridor though, the characters will exit the corridor through another door that closes behind them, thereby sealing the Tunnel-Bot off from them.

Music[]

Name Artist(s) Length Music track
N/A (Tunnel-Bot) Richard Jacques 3:01

Undersea Bolt[]

The Tunnel-Bots are also the bosses of Undersea Bolt, continuing their role as the fifth boss of Sonic Boom: Rise of Lyric. They are encountered after exiting the caverns in Undersea Bolt, and is fought with Sonic and Amy onboard the Angler.

Boss guide[]

After exiting the Undersea Bolt's caverns, three Tunnel-Bots will appear and start chasing the Angler that has Sonic and Amy onboard it. The player can shoot the Tunnel-Bots chasing them with the Angler's weapons to destroy them. However, watch out for the Tunnel-Bots' attack in the meantime. Individually, each Tunnel-Bot can perform a spinning charge towards a fixed place ahead on them, which can damage the Angler if they get caught in their path. Usually, a maximum of two Tunnel-Bots can perform their standalone charge at a time. Tunnel-Bots can also join together for combination attacks if more than one of them are still fighting. When all three of the Tunnel-Bots are there, they can spin together in a circle that can cover the entire top or bottom of the screen. When two Tunnel-Bots remain, they can join claws and charge vertically ahead together while spinning like a wheel that can occupy the right or left side of the screen. Sometimes, they will even move towards the center of the screen. When there is only one Tunnel-Bot left, it will only attempt its charge attack.

After destroying all three Tunnel-Bots, the player will have cleared Undersea Bolt.

Music[]

Name Artist(s) Length Music track
N/A Richard Jacques 3:29

Gallery[]

Concept artwork[]

Gallery

Screenshots[]

Gallery

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