Gigan

Description
In his first form, Gigan looks much like a cross between a bird and a dragon, maintaining his Showa-like appearance, only without the green and metal parts.

In his second form, Gigan has repaired himself with metal parts from dead mechas, and now looks much like his Showa appearance.

In his final form, Gigan has been repaired, and looks much like his Millennium appearance. He continues to repair himself with metal, until he is essentially a robot with organic innards, which leads to his downfall when he is blown up.

Hooked Appendages
Even before he becomes a cyborg, Gigan has his signature blade-like hands and feet.

Wings
Before he becomes a cyborg, the jointed fins on Gigan's back could move like wings, allowing him to fly without the use of antigravity. Once he becomes infused with metal, his wings are unable to move, rendering them useless.

Antigravity Propulsion
Since cyborg Gigan is unable to move his wings, he flies using antigravity propulsion technology. This allows him to fly faster and without wind restrictions.

Optical Beam
When Gigan is infused with metal, Gigan obtains a helmet with a red visor on it that was capable of firing a blast of red energy.