That came as a shock to the modern-day Doom Patrol since Niles had not only given them a home, he was a father figure and mentor to them as well.
However, the tides might be changing for Niles in Season 2, and Timothy Dalton recently explained just how his character will be different in Doom Patrol future on HBO Max and DC Universe.
Minor spoilers ahead for the Season 2 premiere of Doom Patrol.
Perhaps the biggest reveal from Doom Patrol Season 1 was that Niles Caulder was actually responsible for the accidents that turned the titular characters into a broken group of misfits.