Superboy#89
Cover: Curt Swan & Stan Kaye
Superboy #89
“Superboy's Big Brother! Part I”
writer Robert Bernstein · artist, inker George Papp · letterer Joe Letterese · cover Curt Swan, Stan Kaye
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Full credits
writer Robert Bernstein
artist, inker George Papp
letterer Joe Letterese
cover pencils Curt Swan
cover inks Stan Kaye
Full plot ⚠ may contain spoilers
▸ Reveal full plot — may contain spoilers
Trying to prove Mon-El isn't actually Kryptonian, Superboy accidentally exposes him to lead, which both poisons him and returns his memory. Mon-El remembers that he is a space explorer from Daxam, who visited Krypton, meeting Jor-El and Lara, before arriving on Earth. To save his life, Superboy sends Mon-El into the Phantom Zone until he can cure him of his lead poisoning.
Plot details indexed by the Grand Comics Database (CC BY-SA).