Jakeem Thunder (Jakeem Johnny Williams), initially called J.J. Thunder, is a fictional character in the DC Comics Universe, a member of the superhero team the Justice Society of America. The character appeared starting in the second season of Stargirl on The CW network, portrayed by Alkoya Brunson. Publication history Jakeem first appeared in The Flash (vol. 2) #134 (February 1998), and was created by Grant Morrison, Mark Millar and Paul Ryan. Fictional character biography Jakeem Johnny Williams is a precocious teenager from Keystone City -- home of Jay Garrick (the original Flash) and Wally West (one of Garrick's successors). 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 (and still does not know) 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. When Johnny Thunder began to lose control over his "genie" Thunderbolt because of his declining mental health, he put the genie inside an ink pen. Without knowing its danger, Jay Garrick gave the pen to Jakeem. Soon thereafter, the world was threatened by Lkz, a blue genie similar to the Thunderbolt but evil in nature. The Justice League of America and Justice Society of America united to fight the being, whereupon Jakeem discovered that the Thunderbolt actually came from the Fifth Dimension and is controlled by speaking its name (Yz) backwards ("Say You"). Jakeem worked with a small group of JSA members, as they attempted to stay alive while Yz and Lkz battled throughout space. Jakeem even tried to punch out Qwsp, a third genie that came to threaten the group. Qwsp is arrested by the Fifth Dimension police. With the assistance of Captain Marvel, Jakeem was able to merge Yz with Lkz, who was controlled by speaking the phrase So Cûl (pronounced "so cool"). The pink-hued Yz and the blue-hued Lkz formed a new purple genie named Ylzkz, with this new genie also being controlled by the phrase "so cool". Justice Society of America Jakeem somewhat reluctantly joins the Justice Society as a part-time member. Jakeem is welcomed by the fellow young hero Courtney Whitmore (the Star-Spangled Kid, who later changes her codename to Stargirl), who becomes a friend, and positive influence on him.