Mark Millar has a raging hangover but he couldn’t be more chirpy or enthusiastic. ‘People say they get worse as you get older but I get reverse hangovers where I feel amazing. I wake up at four or five and I’m ready to go!’

I’ve caught him on a Sunday morning, on his way to Mass, after an exhausting three weeks in which he has been doing up to 45 interviews a day to promote Jupiter’s Legacy, his blockbuster superhero series for Netflix.