DC Comics vs Saint Seiya
Connection:
Both are young orphans with an estranged biological sister (Mary Marvel and Seika respectively) that has a strong taste for justice
Both are chosen by wise deities (The Wizard Shazam for Billy Batson and Saori/Athena to Seiya) to inherit the powers of Greek Gods to fight threats from other mythologies
Both are powerful beings who wear red, yellow and white outfits
Both are also members of a group who share their powers (Shazam family and the Bronze Saints respectively)