In the Captain Marvel/Shazam comic books, lightning is used as part of the transformation process. Saying the word brings down a force of lightning from Zeus that transforms the summoner into a Shazam ...

But hes basically known as Shazam, which makes sense because of the confusion. So, Captain Marvel was Shazam! which is a D.C. comic, but now they're two seperate heroes owned by two separate entities.

Shazam! America's Greatest Comics was an anthology comic published by Fawcett in 1943 and featuring Fawcett's most popular characters, who were already appearing in other comics. With 50% more pages ...