Don Caballero moved to southern California from his native Spain in the early years of the 19th century and established an estate in the small community of Hawk Hill. His true name unknown, Don Caballero used his expert fencing skills to thwart local felons and desert pirates like the Jackal, and even supernatural threats like the ghost of El Feugo, becoming Hawk Hill's greatest hero in the process.
Over the years, Don Caballero came to instruct others in Hawk Hill, teaching them the fine art of fencing. Caballero used his own blade, the legendary El Capitan, and his own physical prowess and martial skills to defend his southern California home well into his senior years, although his finale fate has yet to be recorded.
- El Capitan the Don's famous sword.
- 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.
- 6 Appearances of Don Caballero (New Earth)
- 1 Images featuring Don Caballero (New Earth)
- Quotations by or about Don Caballero (New Earth)
- Character Gallery: Don Caballero (New Earth)