Composite Superman takes on the following opponents in order
Great darkness saga darkseid and his army of daxamites
Superboy Prime
the quintessence
the hunter prey doomsday returning from entropy
The Spectre golden age Corrigan
golden age dr fate
the marvel family
Mangog
Odin classic
Rune King Thor
King Hyperion
Blue Adam sentry gladiator super skrull
the immortal hulk
the FF
the X-MEN
classic Black Bolt
Galactus