There are at least five bands / musicians called X-Ray.

Ｘ-Ｒａｙ (Heavy Metal) became active in Kansai, Japan in March of 1982. Their first full-length studio album named "Hard Section" was released on June 21st of 1983.

Akira Fujimoto: Vocals
Shin Yuasa: Guitar
Takafumi Usui: Bass
Kazuhisa Takahashi: Drums
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Lukasz "X-Ray" Sychowicz is an Atarai XE/XL chiptune composer and a member of the Grayscale Project. See also grayscale.scene.pl
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X-Ray (Detroit Techno) is a techno collaboration between the Belleville Three; Kevin Saunderson, Juan Atkins and Derrick May
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X-Ray (Hip Hop) is a hip hop producer, he was a member of Monsta Island Czars with MF Doom, MF Grimm. & others.
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X-Ray (Hardcore Punk) is a straight edge hardcore band from Kazan, Russia