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This character exists primarily 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 rock monster[2] is a character that appears in the Sonic Boom television series. It is a Granifer Giganticus who briefly rampaged on Seaside Island after being awoken from its slumber.


The rock monster is a colossal humanoid giant over ten times Sonic's size, whose body is composed entirely of orange boulders held together by an unseen force. He has a head with blue-glowing eyes and a face resembling a skull, round shoulders and upper arms with thick four-fingered forearms, a torso consisting of a round chest with spikes on the back and two segments for the lower torso, and thick legs with sharp knees and two-toed feet. He also has blue and purple-glowing veins across his torso and similarly colored joint-surfaces.


TV series

Season one

Bygone Island Rocky

The rock monster fighting Sonic.

After sleeping for a millennium, the rock monster was accidentally awoken by Sonic and Knuckles. After a brief fight, the rock monster tried to get back to sleep despite being struck with insomnia, trashing through the Village in the process. As Team Sonic tried helping him fall sleep, the rock monster preferred Sticks' terrible singing for a lullaby. Because the rock monster blocked the road where he was though, Team Sonic lured him away, only for Dr. Eggman to come and try capturing him. However, the rock monster escaped Eggman's trap and in the ensuring battle, he fled with Sticks so she could sing for him. However, Team Sonic rescued Sticks and lured the rock monster to Dr. Eggman's lair, where he would fall asleep in Eggman's garden to a recording of Sticks' singing (as payback at Eggman).[1]


As a Granifer Giganticus, the rock monster is proud and has a preference for sleeping, but also operates on a simple mindset. Speaking only in roars and growls, he generally minds his own business in a docile manner, regardless of the destruction he causes around him. When provoked or disturbed, however, he can be quite grouchy, hostile and even monstrous. He also appears to lack a sense of moral as he kidnapped Sticks and made her sing for him despite the consequences.[1]

The rock monster has a peculiar taste in music; he hates melodious singing to the point where he will run away in agony, yet loves Sticks' singing voice which has been liken to "bagpipes in a wood chipper."[1]

Powers and abilities

The rock monster is a quite powerful monster; Dr. Eggman theorized that the rock monster alone was strong enough to destroy entire cities and help him subjugate the entire world, implying an incredible level of might on the rock monster's part.[1]

The rock monster has superhuman strength, capable of sending large boulders flying all the way from the countryside to the Village on Seaside Island with a single kick, uprooting trees with one hand with ease, and even breaking free of the Bee Bots' honeycomb cage without trouble. The rock monster's composition also gives him great durability as he was not even affected by Knuckles' headbutts, and he can make roars strong enough to create powerful gusts of wind. As a Granifer Giganticus, the rock monster also has a lifespan that lasts over a thousand years.[1]

The rock monster has the ability to disassemble and reassemble his entire body at will. This skill lets him camouflage himself as a pile of inert boulders.[1]




See also


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Tuber, Douglas; Maile, Tim (11 April 2015). "Sleeping Giant". Sonic Boom. Season 1. Episode 21. Cartoon Network.
  2. Bill Freiberger on Twitter. Twitter (8 January 2017). Retrieved on 9 January 2017. “Tailooey Fan: What is the name from the "Granifier Giganticus" in Sleeping Giant? / Bill Freiberger: Granifer Giganticus. / Tailooey Fan: He is called this way in scripts? / Bill Freiberger: He's called rock monster in the scripts.”
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