Blue Cube

"Change forms with a Blue Wisp for the Cube form to swap out Blue Rings!"

- Tails, Sonic Colors (Wii)

The Blue Cube (ブルー・キューブ), also known as the Cube form, is a transformation for potentially multiple users which appears in the Wii version of Sonic Colors. It is a Color Power gained by absorbing a Cyan Wisp and its Hyper-go-on, which turns the user into a cube with environment-altering effects.

Appearance
When using the Blue Cube, the user transforms into a perfectly shaped blue cube. In Sonic's chase, his version of the Blue Cube has several vertical and horizontal straight recesses on his surface and on one side, his eyes and ear channels can be seen, albeit they are now yellow and has straight outlines.

Powers and abilities
When transformed into the Blue Cube, the user can send out powerful shockwaves across the vicinity by slamming into the ground, which have different effects on the objects in the area. Enemies and troublesome obstacles caught in the shockwaves are hit with such force that they are blown apart while Blue Rings will turn into Blue Blocks and vice versa. The Blue Cube's only known weakness is that it can only be used for a few seconds and requires more Hyper-go-on from Blue Wisps to be maintained.

Gameplay
In gameplay, the player can only use the Blue Cube while in possession of a Blue Wisp. Unlike most other Color Powers after activating it, Sonic only turns into the Blue Cube when utilizing this form's powers. However, using the Blue Cube will cause the Wisp Gauge to start depleting, and once it runs out, the Blue Cube is unusable. To extend its duration, the player has to collect more Blue Wisps. It can first be used in Starlight Carnival Act 1.

When unleashing the Blue Cube's shockwaves, the player can destroy all enemies (first by launching them into the air and then destroy them) and otherwise destructible obstacles seen on the screen, though things such as Wisp Capsules remain unharmed. Using the Blue Cube near Blue Rings will turn them into Blue Blocks and vice versa, allowing the player to either form solid platforms that unlock new paths from Blue Rings or pass through blockades made of Blue Blocks while gaining additional points. However, once the player's Wisp Gauge runs out, the Blue Rings and Blue Blocks will revert back to their original shape. To use the Blue Cube in gameplay, the player has the following controls:

Trivia

 * When Sonic is using the Blue Cube, he glows blue.
 * The Blue Cube is the only Color Power that transforms Sonic only for the gimmick of its abilities.
 * The Blue Cube is the only transformation-inducing Color Power that does not grant the player any form of Color Bonus points from its actions or presence.
 * The Blue Cube and the Purple Frenzy are the only Color Powers that cannot be combined with any Color Power in the 2 Player mode of Eggman's Sonic Simulator.
 * The Purple Frenzy, Green Hover, and Blue Cube powers are the only Color Powers not to be used in a boss fight.
 * In Sonic Lost World, the Gray Quake functions similar to the Blue Cube.