Invisible

Invisible, also known as Ghost, is a Gear Part that appears in Sonic Riders: Zero Gravity and Sonic Free Riders. It is an Extreme Gear component that can turn both the Extreme Gear and its rider invisible.

Description
Invisible is a component that is installed into an Extreme Gear, which appears as an icon on the head-up display in the top-left corner of the game screen. In gameplay, the player can activate Invisible under special circumstances, which will make the playable character and his/hers Extreme Gear completely invisible to the opponents participating in the race. For the player using Invisible, however, his/hers playable character only becomes transparent, allowing the player to still perceive his/her character. Invisible also grants additional effects which depend on the games.

Sonic Riders: Zero Gravity
The Gear Part first appeared in Sonic Riders: Zero Gravity where it was named Ghost. In this game, its icon is a green-colored circle with a black stereotypical ghost, who puts its tongue out, inscribed in it. Here, Ghost is a Gear Part permanently installed into only certain Extreme Gears.

To activate Ghost in gameplay, the player must press / after collecting a certain amount of Rings. When activating Ghost, the Extreme Gear is surrounded by an orange void, indicate the Gear Part coming into effect. In addition to making the playable character invisible to the opponents, Ghost also makes the user's character icon disappear from the course map when activated, making it impossible for both the player and opponents to determine the user's location on it.

Sonic Free Riders
This Gear Part reappeared in Sonic Free Riders where it was renamed Invisible. In this game, its icon is a purple-colored circle with a lavender stereotypical ghost inscribed in it. Here, Invisible is a customizable Gear Part that can be attached to different Extreme Gears. It can be bought from the shop for 1,500 Rings

If Invisible is chosen as the first Gear Part, it becomes active in gameplay once the race begins. If chosen as the second Gear Part, the player can activate and as well deactivate Invisible by switching stance by turning his/her body around due to the Kinect controls of the game. In addition to making the playable character invisible to the opponents, Invisible also makes the playable character invulnerable to attacks from Action Items.