"Eyeball" was the name Steven gave to a homeworld Ruby. Eyeball was sent to Earth along with other Rubies to discover the whereabouts of Jasper (whom Eyeball idolized and sympathized with, as she shared Jasper's hate for Rose Quartz). But Eyeball and her platoon were outsmarted by the Crystal Gems in both encounters, and she was last seen drifting in deep space.
Powers and Stats
Tier: High 7-A, likely at most 6-C | High 6-C
Name: "Eyeball", Ruby (Known on Gem Homeworld as Ruby-1F4 Cut-4ND)
Origin: Steven Universe
Gender: Genderless, but regarded as Female
Age: At least 5750 years old (Was apparently present when Rose shattered Pink Diamond)
Classification: Ruby, Homeworld Gem
Powers and Abilities: Superhuman Physical Characteristics, Regeneration (Low-High), Immortality (Types 1 and 3), Shapeshifting, Size Manipulation, Body Control, Biological Manipulation, Can fuse with other gems [specifically other Rubies] to become more powerful, Can contain gems in bubbles of energy, Automatic-adjustment to different strengths of gravity, Does not need oxygen to survive, Appears to be skilled with knifes, Immunity to extreme heat, Thermoregulation
Attack Potency: At least Small Island level (Should be capable of hurting other Rubies), likely at most Island level (Rubies by nature are soldier class Gems, so they shouldn't be to much weaker than Amethyst) | Large Island level (Should be at least as strong as Garnet and is likely around the same power level as Gems like Sardonyx)
Speed: Likely Relativistic+ in Combat Speed, Reactions, and Short Burst Speed (Scaling to other Rubies) | Relativistic+ in Combat Speed, Reactions, and Short Burst Speed (Should be faster than before)
Lifting Strength: Superhuman | At least Class 25 due to sheer size
Striking Strength: At least Small Island Class, likely at most Island Class | Large Island Class via power-scaling (Considering that Garnet is just a fusion between Ruby and Sapphire, a fusion between 5 Rubies should be at least as strong)
Stamina: Limitless as long as her gem isn't damaged
Range: Standard melee range
Standard Equipment: Her Gem weapon, which is a chisel knife.
Intelligence: Quite Low; was tricked into searching the entire solar system for Jasper. Though she appears to be a capable pilot and soldier.
Weaknesses: Can be tricked easily, and is too stubborn have second thoughts once sets her mind on something. She also suffers relationship insecurities. Can get "poofed" if her physical form takes too much damage.
Key: "Eyeball" | Fused with other Rubies