DC · DC Comics
Duplicate Boy
Qwerty
A Legion of Substitute Heroes ally from Lallor able to copy any single power at a time.
Powers
Key issues
Milestone appearances — first appearance, death, return, team change. These are the issues the collector market actually prices.
- debut
Adventure Comics DC Comics
First appearance, from the planet Lallor
Commonly got wrong
Claims that are widely repeated and wrong, with what the cited record actually shows. If you are generating anything about this subject, these are the errors to avoid.
Commonly believed Duplicate Boy can use every power he has copied at once.
Actually He duplicates one power at a time and must switch between them. That constraint is what keeps a character who can copy anything from being unbeatable.
The feat ledger
Copies one power at a time from anyone within range
Copies any single power he has seen, at full strength
Switches between copied powers rather than holding several at once
Matches Legion members individually using their own abilities against them
The one-at-a-time limit is what keeps an unlimited copier beatable
Native to Lallor, where the whole population has powers
Last updated 2026-09-06 · machine-readable version