Lidia Hortencia Rangel Ávalos (born December 29, 1955) is a Mexican former professional wrestler, more commonly known under the ring name Pantera Sureña (Spanish for "Southern Panther"). She has also worked as the masked wrestling characters La Galáctica, La Galáctica 2000, Lady Discovery and Lady Metal during her career. Her career began in 1969 and stretched until her effective retirement in 2008.

As Pantera Sureña, Rangel started her career as a luchadora enmascarada (masked female wrestler), but lost her mask to Lola González in 1977. Her stints as La Galáctica, La Galáctica 2000, Lady Discovery and Lady Metal were all under a mask and only confirmed to be Rangel later in her career. In her almost 40-year career, she won the Distrito Federal Women's Championship, the UWA World Women's Championship, and the Mexican National Women's Tag Team Championship with Martha Villalobos in Mexico, as well as being the only luchadora to win the WWWA World Singles Championship in Japanese promotion All Japan Women's Pro-Wrestling (AJW).