- This character is a fictional representation of Cardinal Richelieu, a real person. More information on this person can be found at Wikipedia.org.
- Although Cardinal Richelieu was a real person, his portrayal in Alexandre Dumas' Three Musketeers is heavily fictionalized.
- In the Pre-Crisis Multiverse, Earth-Two and Earth-One each had a separate and distinct Richelieu. On the Post-Crisis New Earth, those two characters were combined into one being.
- The New Earth Richelieu has not actually appeared, but he was mentioned in History of the DC Universe #1.
- 3 Appearances of Cardinal Richelieu (New Earth)
- 1 Images featuring Cardinal Richelieu (New Earth)
- Quotations by or about Cardinal Richelieu (New Earth)
- Character Gallery: Cardinal Richelieu (New Earth)
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