He initially gave off a cold and vicious impression typical of any veteran magus when he met with the other guests. But this had belies a man who was haunted by his past involvement with the Adra Castle and its previous master Lord Ashborn.
After his transference into his homunculus body, his personality became more laid-back and sarcastic, although still very much aware of the gravity of the situation.
Lord El-Melloi II Case Files
Orlocke's family magecraft is known as Papilio Magia, a spell designed to mimic the metamorphic process of a butterfly. Through this spell, Orlocke was able to gradually transfer his crest and his consciousness into a homunculus body he had prepared. By the time of the Adra Castle incident, he had already transferred ninety percent of his being into the new body.
Fittingly, Orlocke also employs several butterfly familiars to act as surveillance when needed.