I found him sitting on top of Everest. I brushed some snow off my jacket's shoulder as I sat down next to him. After a few moments of just the wind blowing, he finally spoke.
"So am I a supervillian now?"
I chose my next words very carefully.
"Not if you come back with me now."
"Hence the soulbound cuffs?"
He reached up my sleeve and pulled them out, then concentrated and disintegrated them. I took the moment to drag my recently soulbounded fingernail across his throat.
"That made you a supervillian." I told him as he died.