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A walking bomb that comes in varying sizes.

— Description, Sonic the Hedgehog Encyclo-speed-ia

The Matryoshka-Bom,[1][note 1] also known as Bigbom,[2] is an enemy that appears in the Sonic the Hedgehog series. It is a mass-produced, bomb-based Badnik model created by Dr. Eggman.


Resembling Bigboms, Matryoshka-Boms have large red and gray round bodies with red and blue buttons and a face plate with blue button that looks like their eye. On top of their heads is a fuse that can be ignited. They can come in three different sizes.

In Encore Mode, Matryoshka-Boms look the same as in Mania Mode, except that their eyes are brown-colored.


In Sonic Mania, and its expansion Sonic Mania Plus, Matryoshka-Boms appear in Metallic Madness Zone Act 1 and 2. In gameplay, they come in three sizes. The large ones normally walk around back and forth. Upon encountering the player however, these Badniks will act like a "matryoshka doll"; the large Matryoshka-Bom will open its mouth and release a medium-sized version of itself before lighting its fuse, who will then release an even smaller version of itself before lighting its own fuse. A few seconds afterward, these enemies will explode, each of them releasing four large projectiles that rain down around themselves.

Medium and smaller sized Matryoshka-Boms also appear around Metallic Madness Zone on their own. While regular-sized Matryoshka-Boms can drop smaller ones on their own, the smaller Matryoshka-Boms function as a regular Bomb from the original Sonic the Hedgehog, though with a much faster walking speed. Similar to these enemies, they can also be found stuck to the ceilings, specially in Encore Mode. Unlike many other Badniks in Sonic Mania and Sonic Mania Plus however, Matryoshka-Boms do not release any Animals upon their destruction nor does the game award points.

Powers and abilities

The Matryoshka-Boms are capable of self-detonation. When they detonate, they release harmful energy balls that scatter around them. In addition, they are capable of wallcrawling.


  1. While not listed in any instruction manuals, the internal files in the PC release of Sonic Mania refers to this enemy as "MatryoshkaBom".


  1. Flynn, Ian; Sega (8 December 2021). "Sonic Mania". Sonic the Hedgehog Encyclo-speed-ia. Dark Horse Books. p. 254. ISBN 978-1506719276. "Matryoshka-Bom - A walking bomb that comes in varying sizes"
  2. Flynn, Ian; Sega (8 December 2021). "Sonic Mania". Sonic the Hedgehog Encyclo-speed-ia. Dark Horse Books. p. 254. ISBN 978-1506719276. "Enemy appearances in Zones (Cont.) - Bigbom."

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