Mark Antaeus

Like a lot. Green Lantern. The Flash. Booster Gold. Hawkman/girl. Firestorm. Blue Beetle. Etc.

^^^How is Black Canary a heavy hitter ?

She is a master in judo and jiu-jitsu and countless other martial arts, she can beat batman in a sparring match and much more

But she isn't exactly a heavy hitter on the level of Mary marvel, supergirl, power girl and wonder woman.

Damage, Super-Man, Conner, Jonathan etc

Captain Marvel jr and the rest of the Shazam family.

Batman

Are we doing just heroes or villains too? 

Anyway, I’d like to add 

Red Star 

Obsidian 

Zatanna 

Donna Troy 

Tempest 

Geo-Force 

Commander Steel 

Steel II 

Steel III 

Citizen Steel

The Ray

Amazing Man

Uncle Sam

Atom Smasher

Spectre

The first Atom: Al Pratt

Yeah @Brainiac 16 let’s get some villain too