Pam Iver came to be when a man devoted to justice and courage fell to deepest of despairs at loss of all friends and loved ones during a crusade against the darkness of the world. Giving birth to rather ferocious unique Heartless
monster which retained humanoid form clad in armor and driven only by merciless wrath and bloodlust. While Pam Iver manifested at Twilight Town, with barely no memories at all who or what he was. But he eventually figured it out himself; that he was Nobody
. The sense of hollow and lack of emotion is immense in him, as he has not even memories of emotions to try mimic them at all. Only negative emotions he can more correspond to and create in him.
However he does have sense of.....purpose? He is driven to action to still fight darkness; fight against Heartless. Not because of sense to protect life, pride nor joy. It's just what he feels is his purpose in his excistence. Simple as that. Besides slaying heartless he cares little else, he does not care saving people even if it's byproduct in what he is doing most of the time. None the less he employs his skilled combat skills for use in battle against heartless and other creatures of darkness. Albeit he has noticed he has sort craving
to create negative emotions, to feel something
. So far he has chosen lust, simplest and most least harmful for other people (better rape than murder someone overall).