Bio: The father of Lara and grandfather of her son, Kal-El,
Sul-Van was on Krypton's high council. When Lara's husband, Jor-El,
claimed that Krypton was on the edge of destruction, the council laughed
and mocked his studies, shunning them when the computer Brainiac told
them that Jor-El's findings were false.
Much to the dismay of the council, it was later revealed that Brainiac
was lieing and destroying the planet himself. It as too late for
Krypton; the planet began to explode and with it, it's inhabitants.
In attempt to throw the police off of Jor-El's trail, Sul-Van drove a
vehicle out of Jor-El and Lara's home, so that they might send their
son, Kal-El, off of the planet so that he'd be able to survive.