Sonicx english
This character exists primarily within the Sonic X continuity.
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
For the enemy in the games, see Boo.

Boom (ブー ?)[1] is a character that appears in the Sonic X anime series and its comic series published by Archie Comics. They are a breed of ghosts who haunt an abandoned castle on Earth and the minions of King Boom Boo.


Calm Boom

The appearance of Booms when calm.

Booms have small and round white bodies. Calm Boos have black, soulless eyes, knitted up mouths, paper-like hands, and two small sharp points on their bottom which resemble legs. When hostile, the Booms gain red and orange maniacal eyes with black pupils, sharper hands with three pointy fingers, and the sharp ends on their bottom merge into one. Their mouths also open, revealing sharp black teeth.




The details of the Booms' background and how they and King Boom Boo came to be are unclear, though it is implied to be tied to a legendary subject[2] (in the English dub, it is hinted they originate from an ancient burial ground that their castle was build upon and that they were behind the disappearance of the castle's original owner[3]).

Chaos Emerald Saga

When a film studio was shooting a movie starring Lindsey Thorndyke at their castle, the Booms were awoken when the talisman keeping them sealed in their world was removed from its pedestal. The following night, the Booms produced strange noises that made the film crew call it a day. Soon after, they began kidnapping visitors in the castle and dragging them into a space between the walls, including the film's staff, Lindsey, Cream, Cheese and Ella, despite Amy, Tails and Chris' attempts to save their friends when they caught the Booms in the act. As Sonic came to the aid of Chris and co., the Booms kidnapped him and Tails too, though Sonic managed to give the talisman to Chris.[3]

The Booms later attacked Amy and Chris when they looked for their friends in the catacombs of the Booms' castle, but they fled when they noticed that they had the talisman. After Amy and Chris followed the Booms to their hiding place, the Boom's leader, King Boom Boo, tricked Amy into releasing him into the living world with the talisman.[3] A Boom then possessed Amy and had her chase Chris so he could be sacrificed to King Boom Boo.[2] However, the Boom hesitated when Chris got close to the talisman. Figuring out how the talisman worked, Chris used it to free the ghosts' captives from their space, and Sonic got the Boom out of Amy. The Booms tried fighting back, but were easily beaten by Sonic and Amy. Some Booms tried taking a stance by forming a Boom Boo, but Amy easily took it out. After Sonic and his friends escaped the catacombs, the Booms were seemingly resealed when Chris returned the talisman to its pedestal.[3]

Archie Comics

Boom Doom

A horde of Boom-possessed humans, from Sonic X #14.

After the incident at the castle, the Booms and King Boom Boo were summoned to the island of one of Lindsey Thorndyke's summer homes when the talisman from the castle was brought there. When King Boom Boo could not sleep in his own world due to the noise from the surroundings, he sent out his Booms to possess enough people for him to enter the living world. When only Chris, Cream and Cheese were left, the Booms pursued them relentlessly until most of them were summoned to serve their king. Some Booms still hunted the heroes, and even got Cheese, until Chris and Cream made a deal with King Boom Boo. In exchange for the talisman being returned to its pedestal by dawn, the Booms and their leader willingly released their victims and returned to their world.[4][5]


Similar to their king, the Booms are mischievous and malicious, giggling and laughing whenever they cause misdeeds. They ferociously possess people and attack them quickly and unexpectedly. However, they are all utterly terrified of the talisman.[1]

Powers and abilities

Being ghosts, the Booms possess a number of supernatural powers. They are capable of levitation, can render themselves and those they touch intangible, and turn invisible. They can also stretch their arms like cloth and merge together to form bigger and stronger ghosts. More mysterious powers they wield include manipulation of matter and light, like completely repairing a shattered stone wall and altering mirror images.[3]

Tn 095amy

The effects of being possessed by a Boom.

Booms can possess their victims by phasing into their bodies, allowing them to take full control of their body and abilities (like Amy's usage of the Piko Piko Hammer). In addition, they retain their levitation skill. As a side-effect, the victim takes on the Boom's facial characteristics.[3][4]

Unlike King Boom Boo, the Booms are able to freely travel between their world and the living world (when not constricted by the Talisman).[3][5] They also share a connection to their leader that lets them empower him; the more living people they possess, the stronger King Boom Boo's bridge to the living world becomes, eventually reaching the point where he can cross over on his own.[5]


All Booms are naturally scared of the talisman―just the sight of it is enough to sent them fleeing.[5][3] The Booms are likewise vulnerable to the power of the talisman, which, when properly inserted into its pedestal, can seal them up inside the catacombs of their castle.[3]

When not relying on trickery, the Booms are actually physically weak opponents which can be incapacitated with minimal force.[3] Also, knocking out their possessed victims can make a Boom leave their body.[2]


Concept artwork



  1. 1.0 1.1 1.2 1.3 File:Sonicx-ep19-eye1.jpg
  2. 2.0 2.1 2.2 Masaki, Hiro (10 August 2003). "Sonic's Scream Test (Japanese version)". Sonic X. Season 1. Episode 19.
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Masaki, Hiro (7 February 2004). "Sonic's Scream Test". Sonic X. Season 1. Episode 19.
  4. 4.0 4.1 Sonic X #13, "Hare-um Scare-um! Part One"
  5. 5.0 5.1 5.2 5.3 Sonic X #14, "Hare-um Scare-um! Part Two"
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