This is Cadena Maria Seiko Flynn-Fletcher, daughter of Linda and Lawrence Flynn-Fletcher. She is from the future. She is a police of the F.F.O.T.T.S.A, The Future Force of the Tri-State Area. Cadena is arresting her brothers, Phineas and Ferb, because in the distant future they will destroy the Tri-State Area. Phieas and Ferb try to tell Cadena why is she call The Tucker but instead she tell Phineas that it is his fault for making her see with her right eye only because his invention ruin her left eye and must wear shade to hide her embrassment and burden of Phineas and she don't care if dying her hair in 2 shades of purple will lead to cancer. She is call the Tucker because she tuck people to sleep and put them in jail in coma. However Cadena will give them a chance to free them if only Candace find out who is the mastermind of the plot to destroy the Tri-State Area because she is an detective in the future. FYL, Stacy, Candace's BFF, is the leader of the Future Force. To all artists you can use her for you fanart of Phineas and Ferb, only if you ask permission and she is the same age as Phineas.