What would be the best way to "deal" with a superhuman who's invulnerable but can still be "taken down"?

[Northern_Piper]

@Kropotkin

I’m thinking cookies and tea and a chance to cry and talk it out. With luck, they’ll kill themselves to escape. If not, the talk will help

How can you tell which of all these solutions was posted by the Canadian?

[eburacum45]

Captain Jack Harkness was defeated by encasing him in concrete; he kept regenerating and suffocating immediately.

Eventually Ianto rescued him with a forklift truck.

Breaking Out Captain Jack! | Day Two | Torchwood: Children of Earth

[Chronos]

@Horatius

I like the black hole suggestion, but then we run into the “faster than light” problem. Sure, this would work, but it might take hundreds or thousands of years just to get the guy to a black hole.

And if your setting does have faster-than-light travel, then you also need to re-evaluate just how absolute black holes are.