His co-star was Matt when they weren’t learning from Matt curse words. Natasia Demetriou, who plays Nadja, said they were a blast to have around—even if they might be messed up for the rest of their lives.

CelebHomes spoke to Natasia, who said that it was great having children on the set. “But every now and then, we’d say, ‘We’ve all got fangs in,’ so I think we might have damaged them in that they’ll never be scared of anything again because we were the friendliest monsters in the world. Every time they did a line, it was like, ‘High five! Woo!'”

An emotionally supporting vampire is someone we love.

What we do in the ShadowsIt airs every Thursday at 10 p.m. ET on FX on Hulu.