Infancy to Toddler Years
Today, Wren is almost always seen wearing her distinctive red, black or purple overalls with a yellow shirt. She also wears pigtails. Like everyone else, she has a large head. Before her redesign, she had three hairs on her head just like her sister when she was a baby. She also has "bulldog cheeks" like her brother. Her eyes are less wide than the cast.
Even though Wren rarely burps or farts, it was revealed in the March 23, 2018 strip that she was more gassier than Hammie, thus making Hammie saying that she was a brother to him. In the fanfic "Wren's Diary", it was revealed that she watches Youtube videos of people burping without drinking anything and she watches Animaniacs on a regular basis to see Wakko burp.