Duplication (imperfect) – The ability to create an imperfect duplicate.
Bizarro (DC) is by far the most famous example of an imperfect duplicate and first appeared in Superboy V1 #68.
Over the years Bizarro created a Bizarro World complete with a Bizzaro Code (Superboy V1 #68)!
In the Modern Age Bizarro was transformed from wacky to dark as exemplified in Alan Moore’s version of Bizzaro in Whatever Happened to the Man of Tomorrow? (Superman V1 #423).
Alan Moore made Supreme into a parody of Superman. The Shadow Supreme is Supreme’s version of Bizzaro.
Magik (Marvel) – New Mutants Special Edition V1 #1
Supergirl – Cosmic Adventures in the 8th Grade (DC)
Thanos (Marvel) – Infinity Abyss #3
Jimmy Olsen (DC) – Superman’s Pal #90