He fell in love with a fellow scientist named Lara, who later become his wife.
At some point in his life, the Ruling Counsel of Krypton ordered Jor-El to work with his brother to create the Medusa Virus, much to Jor-El's dismay, well Zor-El had no qualms about creating the virus. The virus was a fail safe mechanism to protect Krypton, which eradicates all visiting extra-terrestrial life on the planet. However it was never used.
Sending Kal-El to Earth
Jor-El and his wife Lara sent their son newborn son Kal-El to Earth as, like he had expected, their home planet was dying. Before sending him off, Jor-El hid the file regarding Medusa in Kal-El's pod and they were brought to Earth.
Powers and abilities
- Kryptonian physiology: Normally, like all Kryptonians, Jor-El's capabilities were no greater than a normal human of his physical conditioning. However, if he had been charged by the energy of a blue or yellow sun and metabolized into his body, he would have become able to perform various inhuman feats. However, this never happened as he wasn't ever exposed to a sun different to the the Kryptonians' natural red one.
- Genius-level intellect/Expert scientist: Jor-El was highly intelligent, as he was one of the most, if not the most intelligent scientist on Krypton, since he was a member of the esteemed House of El, Jor-El was able to create the synthetic virus Medusa alongside his brother.
- Multilingual: Jor-El was capable of fluently speaking English and Kryptonese.