Ms. Gsptlsnz

Ms. Gsptlsnz, sometimes called Gizpy, is a fictional character who appears in DC Comics' Superman: The Animated Series.

Superman: The Animated Series
She appeared in Superman: The Animated Series in the 1990s as the attractive girlfriend of Mr. Mxyzptlk. Unlike her hyperactive, wild and crazy partner she is more laid back and indifferent to mortals. As an Imp from the fifth dimension she shares the same powers as Mr. Mxyzptlk and isn't bound by third dimensional laws. She appeared in the episodes "Mxyzpixilated" and "Little Big Head Man".

Ms. Gsptlsnz is voiced by Sandra Bernhard (Episode "Mxyzpixilated") and Jennifer Hale (Episode "Little Big Head Man").

A character named Miss Gzptlsnz had previously appeared in Superman's Pal Jimmy Olsen. Ms. Gzptlsnz was a female fifth-dimensional imp who had a crush on Jimmy Olsen, although Mxyzptlk referred to her as his girfriend. The character was created by Jerry Siegel and Curt Swan, and first appeared in Jimmy Olsen #52 (April 1964). Unlike the human-appearing Ms. Gsptlsnz, Miss Gzptlsnz had similar implike proportions to Mxyzptlk. She reappeared in JLA #31 (July 1999) as the leader of a council of 5th dimensional imps passing judgement on Qwsp.

The New 52
In the New 52 relaunch of Action Comics, an elderly character named Mrs. Nyxly was introduced as Clark Kent's landlady. She is revealed to know Clark's secret identity as Superman. After Clark's apparent death while attempting to save a man from committing suicide, she is revealed to be a princess from the fifth dimension. Her real name is Nyxlygsptlnz, the wife of Mr. Mxyzptlk and daughter of King Brpxz. She is also referred to as Gspltlnz. She grants Clark a wish, and makes everyone forget that Clark Kent's death occurred. She is also revealed to be aunt of Ferlin Nyxly, a Superman villain and museum curator from previous continuity. Another character from the fifth dimension, Vyndktvx is hunting her, and Superman as revenge for Mxyzptlk stealing his reputation and his fiance. She is shot and killed after she tells Clark the story of how she came to Earth and the events that led to Vyndktvx's evil motives.