There are two I know of, Bizzaro being one (created Oct. 1958-Superboy #68 first appearance) & Ultraman from Earth -3 (created Aug. 1964-Justice League of America #29 first appearance). The latter being immortal.
I know Lex Luthor is most definitely one of them
The Cheetah
his worst enemy is john cena
Fictional.
Rey Mysterio's worst enemy is Batista.
i think tenten is the worst in naruto enemy .
king Solomon's worst enemy was called Jeroboam.
My Own Worst Enemy - album - was created in 2003.
My Own Worst Enemy - song - was created in 1998.
Scarlet Witch's worst enemy in the comics is Charles Xavier.
My Own Worst Enemy - Scrubs - was created on 2007-10-25.
The Amazonian princess has never married.
there is no enemy of Aquarius its depend on your friendship and no zodiac sings are enemy
None, because the name of the show is My own worst enemy