Susan

Susan Test is the sister of Johnny Test and Mary Test. She is dating Eugene. Susan is know for being a bitchy, but smart, young lady. Previously she worked on inventions with her twin sister which would usually be the catalyst to her brothers wacky adventures, but after End Game she transitions into a more casual lifestyle after her family moves to 85th Avenue, accompanying the gangers sometimes and being apart of the Kumin Gang.

Appearance
Susan test wears a black skirt, blue moon shirt and a lab coat as well as square glasses. She is frequently seen wearing slides.

In laddies first, Susan wears a white top with a bow tie and a skirt. Mary wears dress pants with a dress shirt and a bow tie.

In Holding on for Hamilton, Susan wears a dark red dress. In the following episode Susan is seen wearing Eugene's Bling Bling chain.

Role in the series
As of their debut, Susan appears to be a lot colder than she was in Johnny Test. However, she has a soft spot for Eugene and finally gave him a chance after seeing how much he truely loved her. Susan has been shown to have an ego and a superiority complex to the Zeamy Gang. Despite her saying rude things about Eugene at Duval, she appears to respect him greatly after they started dating. Susan values how respectful and sweet Eugene is, and as a result her tsundere nature is heavily toned down after the date. Susan and Mary used to have a close relationship, but after Mary got more involved in LS they started to grow apart and become more distant. After "Holding out for Hamilton" Susan makes a few supporting role appearances, after "Hello Wakanda Part 2" she returns to her supporting role in the series.

Unlike Maki and Kumin, Susan isn't a real member of the Zeamy Gang and only accompanies them sometimes. In "Keeping Up With Kumin" Susan is a member of the group of girls Kumin hangs out with, while cynical Susan means well and tries to encourage Kumin in doing what she thinks is right. In "Presidential Gangers" she joins the gangers in battling Trumpies. She becomes temporarily handicapped after being shot by Dave in "Business Woman and the Beast" in Cornerstone Church.

Trivia

 * Susan showed small signs of warming up to Eugene after the gang helped end Racism in the "Saving Filthy Frank" movie.
 * Susan was revealed to have moved to Lanham with the Test Family, and taken a new home in Vance’s Old Apartment home way back in one of the first Zoom Day Sequences around the beginning of the 2020 - 2021 school year. The event would end up taking place in Canon after the Boyfriend Stealer Arc
 * In the ZNA End Game’s First Act, when Eugene claims that none of the gang in the room have quirks, Susan says for him to speak for himself. This doesn’t make sense though as Susan is a Joestar, the family being primarily born with Stands and not quirks.
 * Before the World Reset, after disliking sexual intercourse with Gil according to Johnny because of his foreskin, Susan would create the Foreskin Begone 33000 out of hate for the experience. Ironically though she goes on to date and have intercourse with Eugene, and sometimes subtly talks about how much she enjoys it (implying she got over her hate for foreskin, or Eugene’s was different)