User blog comment:Avatar XIII/DCRB 3: Katana vs Samurai Jack/@comment-1652808-20160608040216

List of Ideas:

John Constantine vs Hellboy

Zatanna Zatara vs Criss Angel

Aquaman vs King Arthur

Beast Boy vs Ben Tennyson

Hal Jordan vs Amelia Earhardt

Dick Grayson vs Barnum and Bailey

Solomon Grundy vs R from Warm Bodies

Doctor Fate vs Melvil Dewey (Connections: Lords of Order. Dewey created the dewey decimal system used to organize libraries across the world)

That's enough for now.