Aurora Shooter James Holmes really believes he’s in  a movie. he insists he’s the Joker.

MOVIE MASSACRE suspect James  Holmes remained unapologetic and irrational Saturday in  a Colorado  jail where his life was at risk from inmates bent on revenge.

Holmes, held under suicide watch in solitary confinement, remained in his  murderous “Joker” persona after arriving at the Arapahoe Detention Center, a  jailhouse worker told the Daily News.

“Let’s just say he hasn’t shown any remorse,” the employee said. “He thinks  he’s acting in a movie.”

The man accused in the midnight theater massacre was still acting bizarrely a  day after his rampage at a screening of “The Dark Night Rises” — the last film  in the Batman trilogy.

We are dealing with a deranged man.