Hannah was born in Birmingham, Alabama. She developed stage performance skills through opportunities at church, local theatre, private instruction, and school. Her career in acting started at age 10 (2014). Within her first 7 months of work, she landed an episodic role in Powers (2015); followed closely by a role in the feature film, Paper Towns (2015), as Young Margo Roth Spiegelman.At 12 years old Hannah added two additional feature film screen credits: Miracles from Heaven (2016) with Jennifer Garner, and The Divergent Series: Allegiant (2016), with Shailene Woodley and Theo James. Alligood also joined the award-winning creative team of Pamela Adlon and Louis C.K. as a series regular on Better Things (2016) (FX), where she was cast in the role of Frankie Fox.In addition to working as an actress, Hannah also enjoys drawing, reading, dance, singing, and spending time with her friends and family.