Ami Onuki: They're both girly and peppy.

Bubbles: They love cute animals.

Devine Hana: They're both sweet but psycho.

Momoko Akatsutsumi: They both love reading comics and love eating sweets.

Kirari Tsukishima: They both love singing.

Isabella Garcia-Shapiro: They're both optimistic.

Hana Makihatayama: They're both happy and excited.

Miyako Gotokuji: They're both bubbly and cutesy.

Frankie Foster: They both love cookies.

Chara: They're one of the "Beware the Nice Ones" trope.

Jenny Wakeman/XJ-9: They're nice and friendly.

Juniper Lee: They both fight monsters.

Cloud E Sky: They both love daydreaming.

Rika Lasti and Lyloo Lasti: They're all childish.

Sasha: They're both ditzy.

Star Butterfly: They're energetic.

Starfire: They love everything nice and kind.