The First Murderer is a reasonably cautious man, requiring a warrant to get to Clarence and commending Brankenbury on the wisdom of informing the King that he has handed Clarence over.
He is a resolute man who intends to stiffen his companion’s spine, and does not give in to the hints of conscience that occasionally attack him. He enjoys toying with his victim, answering all of his pleas with the plainspoken assertion that he is going to die, and giving reasons for it. He comes up with the odd idea of drowning Clarence in a cask of wine. He is scornful of his companion’s attack of remorse, but happy to pocket the entire fee on his own, and intelligent enough to know to get out of the country as soon as possible once the deed is done.