She is a K.S. (group of individuals with time and reality bending powers), due to her father, Jaya Utomo, owner of the Jaya Abadi company and ATOM-O private military company. Who used her as a test subject for the KS project, Erika is specifically KS-4 She's friendly and acts casual despite her powers. (Character from Mau Makan Apa, by Labirhin)