Thor

Loki nodded. "Unfasten these chains," he told them. "I'll do it. I'll need Freya's falcon-feather cloak, though."
"My cloak?" asked Freya.
"I'm afraid so."
Freya walked stiffly away and returned with a cloak covered with falcon feathers. Loki's chains were unfasteend, and he reached for the cloak.
"Don't think you can just fly off and never return," said Thor, and he stroked his white beard meaningfully.
"I may be old now," he said, "but if you do not return, ancient as I am, I will hunt you down, wherever you hide, and I and my hammer will be your death. For I am still Thor! And I am still strong!"