Mantock is of Afro-Latina descent. She attended Arts Educational Schools, London where she obtained her BA in Musical Theater.
Mantock primarily works in television, starring as main character Scarlett Conway in Casualty, before she graduated drama school. She was part of the series for 36 episodes starting from 2011 till 2012. She then appeared on Lee Nelson‘s Well Funny People in 2013, before coming to the United States to be a main character, Astrid, on The Tomorrow People, though it was canceled after one season.
Mantock then played the small role of Julie in the film Edge of Tomorrow opposite Tom Cruise and Emily Blunt, before she was cast as the main character, Veil, on AMC’s Into the Badlands. Her character for ‘Into the Badlands’ has received positive response.
Mantock then had a role in the 2017 film, Breaking Brooklyn, and is filming her main role in the series Age Before Beauty.
In March 2018, Mantock was cast in the lead role of Macy in The CW’s upcoming fantasy drama series Charmed, a revival of the 1998 series of the same name. The revival centers on three sisters in a college town who discover they are witches.
| YEAR | TITLE | ROLE | NOTES |
|---|---|---|---|
| 2011-2012 | Casualty | Scarlett Conway | Regular role |
| 2013 | Lee Nelson's Well Funny People | Miss Summers | British television comedy series |
| 2013-2014 | The Tomorrow People | Astrid Finch | Main role |
| 2014 | Edge of Tomorrow | Julie | American science fiction film |
| 2015-2017 | Into the Badlands | Veil | Main role (seasons 1-2) |
| 2016 | The Truth Commissioner | Laura | |
| 2017 | Breaking Brooklyn | Faith Bryant | |
| 2018 | Age Before Beauty | Lorelei | |
| 2018 | Charmed | Macy Vaughn | Lead role |