Machine Mutant

Machine Mutants (マシン ミュータント, Mashin Myūtanto) are a type of artificial beings introduced in Dragon Ball GT. They appear to be the creations of Dr. Myuu, who is a Machine Mutant himself. Machine Mutants, and Machine Mutant technology in general, are fully mechanical beings with organic properties; they can mold, contort, and reshape themselves like organic lifeforms. Machine Mutants also display the ability to absorb and integrate metallic and mechanical materials into their own being, as well as restructure themselves. They can fly with or without ki.
Humanoid Machine Mutants are easily identified by their eyes, which feature two perpendicular lines going across them and converging at the pupil. This gives their eyes a cross-hair-like appearance.

http://dragonball.wikia.com/wiki/Machine_Mutant