Palmer has fought against several alien and supernatural threats, as well as having his own rogues gallery: his arch enemy is Chronos the Time Bandit, the menace of the Bug-Eyed Bandit, the dangerous eco-terrorist Floronic Man, and the miniature misguided Bat-Knights of Elvaran. He also had several time travel adventures by means of Professor Alpheus V. Hyatt's Time Pool. The Atom is a member of several incarnations of the Justice League, and the team is gracious enough to supply a special chair scaled to his default size which can elevate to whatever height needed so he can easily partake in team meetings without having to go out of costume. There, he meets Hawkman (Katar Hol pre-"Hawkworld", Carter Hall post-"Hawkworld"), one of his closest friends in the superhero community. Neither character achieved major popularity, and even in their heyday were mostly supporting characters, often with Palmer as a specialist in size alteration who was often needed to access extremely confined areas only he could access. Hawkman would manufacture prosthetic wings for a myna Ray saved, taking on the name Major Mynah and became the Atom's partner and steed.