Some sketches of Gamma Ray in various ‘alternate forms’, some just for fun.
 
Top Left: Humanoid/EQG Gamma Ray, I suppose? I went with an actual skin color as opposed to EQG’s method of using a very pale version of the pony’s fur color for skin color and I like it much better. I also enjoy the CM as a necklace/accessory.
 
Top Right: Cutiemark for Gamma Ray in my OGAU (Known there as Aether Ray) where Sunburst and Starlight Glimmer remained together and both raised her.
 
Bottom Left: R63/Genderswapped Gamma Ray just for the fun of it. Would probably have his name be Heat Stroke.
 
Bottom Right: Aether Ray from my OGAU (To go with the CM above). This is taken from a Q&A I did when Gamma Ray was asked about how she would be if Sunburst and Starlight had stayed together.
 
““Her talents are still based on sun/solar magic, but instead of being trained for revenge and using it to literally set Equestria on fire, she uses it to help burn off troublesome fog or mist, power solar based things, or even providing warmth/heat. Unfortunately due to her parents both being a combination of awkward hermit and blunt, socially stunted magic prodigy, her social skills really aren’t all that great.”