★1Shockwave & Awe
Atom increases in size dealing Physical DMG equal to 500% of ATK, plus an additional 1500 Phyiscal DMG to all enemies and stunning them for 2s before exiting the battle
Atom
Legendary
C
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Teen Titans
Justice League
MetahumanQuantum's Take
Atom is a Legendary Warrior Champion who does Physical damage. Atom is best used in null.
They can be obtained in The Bleed, Motherboxes (Green, Blue, Purple, Yellow), Random Legendary Shard.
You should focus on the following transmutes for Atom: HP, Crit RES, ATK.
Atom saw a significant rework in 2025, taking his kit from utterly unusable to moderately effective against certain Training Simulator levels, and to an extent in PvP modes such as 3v3 Strategic Challenge. The stun on his ultimate, coupled with significant AoE damage prior to his departure from the battlefield, can be the push you need to complete levels you otherwise struggle with. He doesn't need much investment (if any), so he's just a good champion to have in your level sync just in case.
Recommended Legacy Pieces
Champion Abilities
Abilities unlock from 1 star and gain an upgrade at every rank — White, Blue, Purple, Yellow, Red. The star each ability upgrades on is shown on its card.
★1
★2Small Target
Atom shrinks rapidly, increasing Dodge by 18% for 10s
Multiversal Force Enhancement
Small Target - Enhanced
Reduces cooldown of Small Target.
★3Atomic Cohesion
Increases all Champions' Physical DEF.
★4Exponential Force
Atom's ATK increases by 1.5% per basic attack until the end of battle, max of 15%
Multiversal Force Enhancement
Exponential Force - Enhanced
Increases The Atom's ATK.
★5Subatomic Retreat
Upon defeat, Atom deals Physical DMG equal to 300% of ATK to nearby enemies before exiting and Stunning them for 2s
Multiversal Force Enhancement
Subatomic Retreat - Enhanced
Increases The Atom's DMG dealt.
Justice League of Discord Community Voted Tier Ranking
Tier explanations
S+The absolute best champions — meta-defining and dominant in every game mode.
STop tier characters that make an impact in every game mode.
A+Top tier in one or some game modes, but not all.
AGreat champions that, while not top tier, are still very good in many situations.
BSolid middle of the road champions — don't particularly excel anywhere but still overall good picks.
CChampions that excel in the early game but perform considerably worse later on. Also champions that have a well defined niche but don't particularly stand out outside of it, so they aren't worth building unless you have a developed roster.
DChampions that fail to have meaningful impact in any content.