Why does Raiden have a jaw?

Question

During his time as a prisoner, Raiden was used as a test subject for exoskeletal enhancement surgery, in which he had his head and spine excised from his lower jaw and replaced with a synthetic one. On Jul 9, 2018:

Hagrid P Hazard · Accepted Answer

During his time as a prisoner, Raiden was used as a test subject for exoskeletal enhancement surgery, in which he had his head and spine excised from his lower jaw and replaced with a synthetic one. On Jul 9, 2018:

Why does Raiden have a jaw?

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