The doctor switched his brain with his sister's, as an experiment. The head director wants her brain switched with the young vice director's and Robin calls himself a doctor now. So the doctor somehow likely switched brains with Robin to preserve his own life which is why he's got a spooked face now that he's face to face with someone who might realize the frankenstein project happening in the facility as 80 year olds who caused the last global crisis try to preserve their lives at the expense of the young- ironically something that could be compared to the real world elders in the wake of the 2008 recession up to present and their refusal to lose their grip on power.