Ramona Marquez is an actress.
The term child actor or child actress is generally applied to a child acting on stage or in motion pictures or television , but also to an adult who began his or her acting career as a child ; to avoid confusion , the latter is also called a former child actor . Ramona Marquez ( born 24 February 2001 ) is a British child actress from London , best known for her role as Karen Brockman in the BBC One sitcom Outnumbered .