Pathiri had a Very Bad Childhood of being ostracized due to a mix of racism and his parents being Bad. He's also had people he cared about murdered in the past and definitely wished he could have murdered the murderers back. Not that he's going to be remembering that thanks to amnesia so idk how pings will go in that case.
He also grew up and did a bunch of murders as an assassin for a revolutionary group, though he hasn't done it for personal reasons like needing money/wanting to hurt someone. He definitely thinks of himself as a murderer and doesn't think what he did should be 100% excused just because it was for a good cause, though.