Brittany Ishibashi. Actress: Marvel's Runaways. Brittany Ishibashi was born in Orange, California, USA. Brittany is an actor, known for Marvel's Runaways (2017), Teenage Mutant Ninja Turtles: Out of the Shadows (2016) and Grace & Frankie (2015). Brittany has been married to Jeff Horowitz since 29 May 2011. They have one child.