DC Database

Quote1 Because of the two white stripes on him that look like lightning, I'll call him Streaky! Quote2
Supergirl src

Streaky was Supergirl's pet cat that was given super-powers by an unusual form of Kryptonite.

One day, Linda Lee was experimenting on a piece of Green Kryptonite in an attempt to find a way to neutralize its deadly effects. When her experiment failed, she tossed the altered Kryptonite out of the window. Unbeknownst to her, her chemical treatment changed it in a different type of Kryptonite, later known as X-Kryptonite.

Later on Midvale, Linda happened upon a stray cat attacked by a vicious dog. Linda saved him, and the cat followed her all the way to the Midvale Orphanage. Delighted, Linda wanted adopt him. Miss Hart let her keep it, and Linda called her new pet cat Streaky by two unusual yellow fur stripes zigzagging along his sides.

Later that night, Streaky wandered over the nearby forest and happened upon the piece of Kryptonite discarded by Linda and was exposed to its radiation. Due to an unique combination of chemicals in X-Kryptonite, it gave Streaky temporary superpowers.[1]

Streaky became Supergirl's helper and a member of the Legion of Super-Pets. Linda took Streaky with her when she was finally adopted by the Danvers.[1]

Streaky continued being Supergirl's sidekick until a bizarre lab accident turned all Kryptonite into iron. Gone his power's source, Streaky became a normal cat again.

Linda left him in charge of her parents in Midvale when she moved to San Francisco.[2]

Streaky had a 30th century descendant named Whizzy (who also had superpowers).


Unique Physiology: Streaky was an ordinary Earth tomcat which gained powers when exposed to X-Kryptonite radiation.


  • This version of Streaky, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths event and later restored following the rebirth of the infinite Multiverse during the Dark Crisis of 2022-2023. Even though other versions of the character may have appeared, this information does not apply to those versions.

 Main article: Supergirl Recommended Reading



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