Aquaman was once a prominent member of the Justice Lord but finally saw
that by controlling the world like tyrants they were perpetuating the
greatest evil. He broke off all ties with them to return to the ocean.
One day Superman and Batman came looking for him and made him " an
offer you can't refuse or else" type of offer to rejoin the team. When
he refuses Superman melted his hand with his heat vision and Batman
beat him mercilessly and caused the lose of his eye as well as the
scaring on his face. Upon returning to Atlantace and recovering from
his injuries he fashioned a silver hook to replace his hand and vowed
to take revenge on the Justice Lords. He wears there uniform as sort of
a mockery of them and fights to end there rain of terror with a small
band of underground resistance fighters who in the main reality are
super heroes not associated with the Justice League.