The Mind Control Device is a grey headband shaped like a flat and wide "M". It has a pink circular pad on the middle and the ends, a few yellow stripes, and two blue fins on each end.
Abilities and traits
As described by Tails, the Mind Control Device is a form of "mini neural bypass switch." When placed on a victim, it takes control of the wearers' mind and makes them obedient to Lyric. Indirectly, it can also reveal the wearers' thoughts, though this process is implied to be hazardous to the wearers. It is also equipped with talking holographic projectors for communication.
An apparent side-effect of the devices' ability to control minds is that the wearers adopt a robotic speech pattern.
Sonic Boom: Shattered Crystal
Two Mind Control Devices were used by Lyric the Last Ancient. The first was used on Shadow the Hedgehog to forcefully recruit him, and the second was used on Amy Rose to immobilize her and pry out her knowledge on the Crystal Shards when she would not tell him. However, Shadow's device was destroyed by Sonic, which Lyric used to warn Team Sonic to not meddle in his affairs, and Amy's was removed before it could damage her mind.