Young Justice Wiki

The unmodified gene bomb.

The gene-bomb was an explosive device designed to spread a virus to selectively kill G'arrunn and B'lahdenn Martians.[1] It was also secretly used by Lor-Zod in his plot to assassinate Superboy.[2]


The gene-bomb was created by Desaad for Ma'alefa'ak as payment for the latter's work on New Genesis for Apokolips. It was designed and tested to kill only G'arrunn and B'lahdenn Martians, though Desaad could not be sure about A'ashenn Martians of mixed parentage, due to lack of test subjects.[1]

Ma'alefa'ak planted the bomb under the Royal Arena and set off the timer to coincide with Prince J'emm J'axx's birthday celebration. In the interim, Lor-Zod placed a small box of Kryptonite on the bomb.[2] The sound of this alerted Superboy to presence of the bomb, and he punched through the floor to take the bomb to a lava flow beneath. Superboy shattered the canisters containing the virus, which was destroyed by the lava. The explosive itself survived however, and Superboy was apparently killed in the explosion, leaving behind a shadow of ash. Kryptonite traces were found in the air following the blast,[3] but Ma'alefa'ak was unaware of any Kryptonite in the bomb.[4]

Superboy is later revealed to have survived and was saved by Phantom Girl right before the bomb exploded, who sent them both to the Phantom Zone by accident in the process.[5] Months later, Lor-Zod is sent back in time to the day of the explosion and ends up falling victim to his own Kryptonite and dies, leaving the shadow of ash which was originally believed to belong to Superboy.[6]



  1. 1.0 1.1 Blanchette, Andrew (writer) & Heuck, Vinton (director) (October 16, 2021). "Needful". Young Justice. Season 4. Episode 02. HBO Max.
  2. 2.0 2.1 Krieg, Jim, Volpe, Giancarlo (writers) & Berkeley, Christopher (director) (April 21, 2022). "Encounter Upon the Razor's Edge!". Young Justice. Season 4. Episode 19. HBO Max.
  3. Paredes, Francisco (writer) & Berkeley, Christopher (director) (October 28, 2021). "Involuntary". Young Justice. Season 4. Episode 04. HBO Max.
  4. Dubuc, Nicole (writer) & Berkeley, Christopher (director) (November 18, 2021). "The Lady, or the Tigress?". Young Justice. Season 4. Episode 07. HBO Max.
  5. Vogel, Michael (writer) & Heuck, Vinton (director) (May 19, 2022). "Ego and Superego". Young Justice. Season 4. Episode 23. HBO Max.
  6. Weisman, Greg (writer) & Heuck, Vinton (director) (June 9, 2022). "Death and Rebirth". Young Justice. Season 4. Episode 26. HBO Max.