Nick Name

Dog of Steel


Civilian ID
Legal Status
Nation or Planet of Origin

Krypto I


Krypto III

Artificial Krypton created by Braniac-13.

Group Affiliation

Krypto I

Legion of Super-Pets

Krypto III


Base of Operations

Krypto I

Doghouse of Solitude

Smallville, Kansas

Krypto III

Fortress of Solitude


40 lbs.
Eye Color
Hair Color
Known Powers

Solar enhanced biologically typical Kryptonian dog possessing super-strength, speed, agility, stamina, invulnerability, super-sonic flight, laser vision, x-ray vision, macroscopic and microscopic vision, acute senses, hurricane force and super-cooled breath, ability to live without nutrition, liquid, air or rest for long periods of time and an extremely long life expectancy.

Genius level intelligent for a dog.

Note: Only known weakness is to Kryptonite radiation and magic.

Kryptonite is a radioactive element native to the extinct planet Krypton, and depending on its color quality, effects Krypto in different ways. Green Kryptonite is deadly.

Collar and Cape
Common Enemies

Krypto I


Krypto III

General Zod II


Regularly Appearing

Action Comics

Superman Vol. 2

Adventures of Superman

Superman: The Man of Steel

First Appearance

Krypto I

AdventureComics #210 (May, 1955)

Krypto III

Superman Vol. 2 # 167 (April, 2001)


Krypto I

Otto Binder & Curt Swan

Krypto III

Jeph Loeb & Ed McGuinness


Krypto I

Due to a ban on space travel Jor-El couldn't safely acquire test animals for his rocket experiments. Desperate, the Kryptonian scientist resorted to using his infant son's dog as a passenger for an orbital spacecraft. While in orbit the craft was struck by a meteorite and was irretrievable. When Jor-El's next rocket, containing his son Kal-El as a passenger destined for the planet Earth, left the doomed planet of Krypton, the dog's spacecraft was drawn into the space warp.

When Kal-El's rocket reached Earth it crashed near Smallville, Kansas, but the dog's craft was trapped within the planet's orbit. Other than being confined, the dog was secure because his alien physiology absorbed the yellow radiation of Earth's sun making him more powerful and capable of surviving without food, water or life support.

After over a decade the spacecraft's orbit decayed and it crashed to Earth, coincidentally near Smallville. When the dog emerged its super senses detected the scent of the child that was once his master, reuniting a teen Kal-El now under the guise of Superboy with his pet dog Krypto.

Krypto III

Director of S.T.A.R. Labs, Dr. Emil Hamilton John Henry Irons (Steel II) discovered the Phantom Zone could be used as a portal not only to other dimensions but other places in time. After Superman received a time-capsule message from his biological father Jor-El about the true Krypton, he resolved to use the new discovery about the Phantom Zone in an attempt to spare Krypton it's fate.

He and his wife, reporter Lois Lane, wishing to get the exclusive of the century, traveled to the city of Kryptonopolis to meet Kal-El's (Superman) parents.

When they returned to Earth Kal-El's childhood pet Krypto followed the couple through the phantom zone. As his Kryptonian physiology began to absorb Earth's yellow solar radiation, the dog grew stronger and more powerful everyday, becoming a Superman's best friend, Krypto the Superdog.

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