Name	Known for
John Clark Old Henry Old Henry See fewer	Duck World (2017)
Lisamarie Costabile Henry's Mother Elinor Henry's Mother Elinor See fewer	Back to the 2015 Future (2015)
Francesca De Luca Henry's Aunt Henry's Aunt See fewer	Distant Vision (2015)
Oliver Faith Sister Sister See fewer	Giants Do Fall: The Story of David (2018)
Marlon Fisher Teen Teen See fewer	Bel-Air (2022)
Nat Leykam Henry's Father (as Nate Leykam) Henry's Father (as Nate Leykam) See fewer	Life's A Bitch and then One Kills You (2019)
Casey Miller Young Henry Young Henry See fewer	Luca (2021)
Noa Mollie Sister Sister See fewer	Duck World (2017)
Faith Alexis Oliver Birthday Guest Birthday Guest See fewer	3022 (2019)
Naomi Prentice Teen Teen See fewer	Secret Space (2019)
Chris Sturgeon Teen Teen See fewer	Time Trap (2017)
Orenda Velvet Wurth Henry's Sister (as Orenda Costabile) Henry's Sister (as Orenda Costabile) See fewer	House of Bad (2013)