From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Old Witch (魔法使い の クソババア, Mahōtsukai no Kusobabā; FUNimation "Old Witch"; Literally meaning "Witch's Hag") is a witch.
Old Witch has a resemblance to Uranai Baba, but is taller.
Dragon Ball Z
Old Witch stole one of Young Kaioshin's Potara Earrings. This caused them to fuse into one person. Her name or position in the Next World (if she has either) is unknown.