When Stargirl's mother is hired as the costume designer on a movie, they relocate to L.A., where Stargirl quickly becomes involved with an eclectic assortment of characters.
| Actor | Role |
|---|---|
 Grace VanderWaalSusan "Stargirl" Caraway | Susan "Stargirl" Caraway |
 Judy GreerAna Caraway | Ana Caraway |
 Elijah RichardsonEvan | Evan |
 Uma ThurmanRoxanne Martel | Roxanne Martel |
 Tyrel Jackson WilliamsTerrell | Terrell |
 Judd HirschMr. Mitchell | Mr. Mitchell |
 Nija OkoroDaphne | Daphne |
 Chris WilliamsGeorge | George |
 Al MadrigalIggy | Iggy |
 Ben GeurensDaniel | Daniel |
 Kristin SlaysmanJody | Jody |
 Sarayu BluePriya Collins | Priya Collins |
 Conor HustingPedro | Pedro |
 Sara AminiNicole | Nicole |
| NNoah TaliferroMike | Mike |
 Kelly SryDaryl | Daryl |
| AAdrienne BealJune | June |
 Starr GilliardEtta Tutu | Etta Tutu |
 Janzy ParaisoYoung Women | Young Women |
 Roman ArabiaMax | Max |
 Chelsea ConwrightYoung Waitress | Young Waitress |
 Heather Grace HancockManager | Manager |
 Matt CordovaKen | Ken |
| PPeter G. AdamsDan | Dan |
| JJasmine AshMaggie | Maggie |
 Janelle FroehlichFemale Production Assistant | Female Production Assistant |
 Joey JenningsMale Production Assistant | Male Production Assistant |
| RRebecca Ann JohnsonTail Waitress | Tail Waitress |
| RRyan FreelandBart | Bart |
| ZZuri ApplebyMelissa | Melissa |