Green Kryptonite
Lethal (Gradual Cellular Necrosis)
Effects on Superman: Vaporizes yellow solar radiation stored in Kryptonian cells within seconds, inducing acute muscular agony, fever, nausea, skin peeling, and fatal cardiac arrest within 1 to 2 hours of exposure.
Effects on Humans: Prolonged exposure induces cancerous sarcomas (Lex Luthor lost his right hand due to wearing a Green Kryptonite ring).
Red Kryptonite
Chaotic / Highly Unpredictable Mutagen
Effects on Superman: Every piece causes a completely unique 24-to-48-hour anomalous reaction: split heads, massive rage psychosis, loss of moral restraint, dragon transformations, or temporary amnesia.
Effects on Humans: Bizarre psychological agitation and hallucinations in high concentrations.
Gold Kryptonite
Catastrophic (Irreversible Power Stripping)
Effects on Superman: Irreversibly destroys the Kryptonian cellular ability to metabolize and process solar radiation. Contact permanently strips Superman of all powers forever, turning him into a baseline mortal human.
Effects on Humans: Completely harmless to humans.
Blue Kryptonite
Zero for Superman / Fatal to Bizarros
Effects on Superman: Completely inert on normal Kryptonians. However, it acts as a lethal neurotoxin against Bizarro clones, dissolving their imperfect cellular structures instantly.
Effects on Humans: Inert on human physiology.
Platinum Kryptonite
Beneficial Transmutation Catalyst
Effects on Superman: Inert on Kryptonians. However, when touched by a baseline human, it permanently and safely rewires human DNA to possess the full suite of Kryptonian powers (Flight, Heat Vision, Invulnerability).
Effects on Humans: Grants permanent godlike superpowers without genetic degradation.
Black Kryptonite
Psychological Fission & Dual Manifestation
Effects on Superman: Splits any Kryptonian into two distinct physical entities: one representing pure compassionate heroic morality, the other an unhinged, psychopathic bloodthirsty destroyer.
Effects on Humans: Causes acute schizophrenia and emotional division in metahumans.
White Kryptonite
Universal Flora Annihilation
Effects on Superman: Completely harmless to Kryptonians and animal tissue. However, it emits a microscopic radiation field that instantly vaporizes all plant life and microscopic bacteria within a 25-meter radius.
Effects on Humans: Harmless to human flesh, but vaporizes gut microbiome and flora.