Iris Jacobs was a schoolteacher who befriended Karate Kid during one of his trips to the past. She was temporarily transformed into the diamond-skinned villain Diamondeth.


  • Although this character was originally introduced during DC's Earth-One 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 should be considered apocryphal.