History of character is unknown.
- Although this character was originally introduced during DC's Earth-Two era of publication, their existence following the events of the 1985-86 limited series Crisis on Infinite Earths remains intact. However, some elements of the character's Pre-Crisis history may have been altered or removed for Post-Crisis New Earth continuity, and no longer apply.
- Was named "Jan Haasen" in his first appearance.
- 99 Appearances of Jan Haasan (New Earth)
- 4 Images featuring Jan Haasan (New Earth)
- Quotations by or about Jan Haasan (New Earth)
- Character Gallery: Jan Haasan (New Earth)