Jakeem Williams

Jakeem Johnny Williams is a precocious teenager from Keystone City. Jakeem's mother left his father while she was still pregnant with the boy, and he was orphaned when his mother died of cancer. His aunt Lashawn was then granted custody, and his father, Phil, never knew about his birth. Jakeem became a self-reliant latchkey kid who grew up on the streets and adopted a tough, foul-mouthed attitude in order to survive.

Eventually, Jakeem comes into possession of Johnny Thunder's genie called Thunderbolt. He received the genie from a pen given to him by Jay Garrick. When the world was threatened by an evil Thunderbolt from the same dimension as his Thunderbolt, Jakeem assists the Justice Society of America in defeating it and returning it to the Fifth Dimension.

To combat the threat, Jakeem's thunderbolt Yz combined with another genie named Lkz to form Ylzkz. Controlled by the phrase "So Cûl" (pronounced "so cool"), the new purple genie gained enough power to defeat the rogue Thunderbolt and banish it back to it's dimension.

Jakeem soon, and somewhat reluctantly, joins the Justice Society as a part-time member. Jakeem is welcomed by the fellow young hero, Stargirl, who becomes a friend, and positive influence on him. He also benefits from the guidance of Johnny Thunder himself. He and Hourman (Rick Tyler) also build a brotherly friendship. Like Johnny before him, he often caused trouble by wishing for things without meaning to due to poorly-worded commands.