Piece by piece sanity deteriorates
Headcanon info:
This takes place before he was admitted to Thorney Towers. His humble beginnings as a criminal took flight, and his malicious nature thrived. Doing these gruesome crimes by maiming his victims made him even more deranged, as time went on to try and deal with unresolved emotional/physical trauma he endured... Relieving his pent up rage
His parents are that source whenever he realizes this or not, subconsciously so...