Gray Quake

The Grey Quake (グレイ・クエイク) is a transformation used by Sonic the Hedgehog in the Nintendo 3DS version of Sonic Lost World. It is the Color Power Sonic gains when absorbing a Grey Wisp and its Hyper-go-on. When using this form, Sonic turns himself into a iron ball.

Physical Appearance
When transformed into the Grey Quake, Sonic's entire body turns in a grey rhombicuboctahedron. The only parts of Sonic's body features that are shown in this form are his eyes, which take up two squares on the surface and are connected by smaller eye area.

Powers and Abilities
As the Grey Quake, Sonic's body density is greatly increased, making him extremely heavy. By jumping or falling down on the ground, Sonic can use his immense weight to generate powerful and destructive shockwaves across the area that are powerful enough to tear apart Eggman's robots and break down the environment. The Grey Quake also possesses wallcrawling abilities, allowing Sonic to scale walls despite his weight in this form.

The main drawback of the Grey Quake, is that Sonic's immense weight in this form makes it harder to him to move around, making his movements very slow.

Gameplay
When using the Grey Quake in gameplay, the player can use the 3DS's Gyro Sensor to roll Sonic around by tilting the 3DS console, and can even roll up walls indefinitely. By jumping with the Grey Quake in gameplay, it will destroy all enemies and obstacles within the shockwave's range.