Played by Eden Sher
Sue is the only daughter of Frankie and Mike Heck. While middle children might be known for being passed over, we're pretty sure you won't forget about Sue. She tries really hard to find her niche, but she can't help but fail spectacularly at everything she tries. But she fails so huge and puts so much into every effort, you won't be able to help rooting for her, because one day she's going to make her mark.