Atom (character)

[3] He initially had no superpowers; instead, he was a diminutive college student and later a physicist who was depicted as a tough guy, a symbol of all the short kids who could still make a difference.

Pratt was a founding member of the Justice Society of America, later gaining limited super-strength, and an energy charged 'atomic punch'.

After stumbling onto a mass of white dwarf star matter that had fallen to Earth, he fashioned a lens which allowed him to shrink down to subatomic size.

[4] Prior to Ray Palmer's trip to the Amazon Jungle, he learns his wife Jean Loring has had an affair with her colleague, Paul Hoben.

[8] Ryan Choi, as described by DC solicitations, is "a young hotshot professor who's filling the extra spot on Ivy University's teaching staff.

He debuted in the Brave New World one-shot, a preview of projects, and then appeared in the series The All-New Atom, written by Gail Simone.

In this new timeline, a new, female Atom is introduced, Rhonda Piñeda, a Hispanic American college student from Ivy Town.

[10] She is revealed to be working as a reluctant spy for Amanda Waller and Steve Trevor, gathering intel on the new Justice League recruits.

[11] At the conclusion of the "Trinity War" storyline, she is revealed to in fact be betraying both teams; she hails from the alternate universe of Earth-3, where she is a member of the Crime Syndicate operating under the name Atomica.

Rhonda falls inside the building and lands near Ray Palmer's Atomico work, gaining size- and density-changing powers.

Atomica is the lover of speedster serial killer Jonathan Chambers / Johnny Quick and accompanies him on his high-speed murder spree across Central City.

[15] An unnamed scientist in the 853rd Century performed experiments in superstring theory that creates a singularity and whose radiation alters his physical make-up.

Stranded, he searches this universe for remnants of the one he lost, in time taking the name the Atom and joining the Justice Legion Alpha when he helped them defeat the Bizarro-Legion.

This Atom's powers differ from his predecessors in that he doesn't shrink but breaks up into several smaller duplicates of himself divided amongst his mass.

[59] In the Tangent Comics imprint, the Atom is "Arthur Harrison Thompson", a subject of radiation testing on human beings.

[60] The first hero in the Tangent timeline, he inadvertently caused the Cuban Missile Crisis to escalate into a limited nuclear exchange that obliterated Florida and Cuba in 1962, unknown to his fellow Americans.