The Kyle incarnation of Mist first appeared in Adventure Comics #67 (October 1941), and was created by Gardner Fox.
[3] He was a member of the Ultra-Humanite's incarnation of the Secret Society of Super Villains, and appeared during the late 1980s Starman series (chronicling the adventures of Will Payton), then using the name Nimbus.
Ultimately, he revealed he was tired and had decided to end his life, planting a nuclear bomb in Opal City set to detonate at the moment of his death and then taking poison.
However, he failed to destroy the city, as a terminally ill Ted Knight used an advanced version of his Cosmic Rod to lift the entire building miles into the air; the two enemies made peace with each other just before the Mist's heart stopped, killing them both.
After Jack killed her brother Kyle, she underwent a major personality shift and became the second Mist, exposing herself to the same process that had given her father his powers.
[7] This brazen attack on major American cities and on the persons of a handful of retired JSAers resulted in the re-emergence and the re-formation of the Justice Society of America.
This did not have an immediate effect on the super-scientists and criminals who operated openly in the 1940s and covertly in the 1950s, but over time this curious breed of villain did begin to re-emerge.
Though Park City did have a protector in the guise of the Black Canary, this heroine was only seen infrequently and the Mist seemed not to have been perturbed by this.
At about this time, the Lance family was visited by their friend Ted Knight; he accidentally intercepted a hypnotic sound wave sent by the Mist.
During this crime spree, the Mist discovered how to use his inviso-solution, sound waves and a recording of motor noises from the Park City Observatory to block star-energy from reaching Starman's Cosmic Rod, in effect making it powerless; however, Starman had with him a newer, quasar-powered Rod, which proved impervious to the deactivation.