My 13th member of the All-Star Squadron: Merry the Gimmick Girl!
Although technically she never was an official member, she hanged around with her cousin, the Star Spangled Kid, and helped him when Pat Duncan (Stripesy) wasn't around.
Her later development (being marry to the villain Brainwave I and later dying) really sucked!
Hair: MOTU2000x He-Man
Torso, cape & upper arms: DCSH Supergirl
Lower torso & legs: YJ Artemis
Gloves: DCSH Batgirl
Skirt: LOTR White Gandalf
Boots: ML Rachel Summers