Aside from Liliana Vergamon, the only other named member of Luciano Bradley's Grausam Valkyrie Squadron, a quartet of all female pilots. Younger sister of Kewell Soresi.
In the novels, she is stated to be attending a military academy in Area 11 during 2017. Prior to her joining the Valkyrie Squadron, she also served under Cornelia along with Liliana. In 2018, she became one of the Grausam Valkyrie Squadron pilots under Luciano Bradley's command; she and the other Valkyries are killed by Kallen after she escapes her confinement. Marika dies saying her brother's name.Sources: Wikipedia, Danbooru and CodeGeass Wiki