John's twin, Dr. Samantha Grimm.
https://i.pinimg.com/originals/3a/7f/bc/3a7fbcfcccee6296d78e3d6ccaa967f0.jpg
(Actress Rosamund Pike from Doom.)
https://i.pinimg.com/originals/3a/7f/bc/3a7fbcfcccee6296d78e3d6ccaa967f0.jpg
(Actress Rosamund Pike from Doom.)