The bomb attached to self idea reminds me of Argo Gulsky from G Gundam... He too was a criminal whose chains only came off when fighting. And the only time the bomb came off was when the jailer/controller, Natasha, fell in love with him and set him free in the end. I wonder if we'll see any of this here... Given the circumstances, I wouldn't be surprised.
I'm mainly targeting Older Chall and Fonn Sparks, and/or Louid and Marlene.
Tangent: This would make an interesting fanfiction...