karaku

looks: As the manifestation of Hantengu's pleasure, Karaku showcased himself to be the most relaxed and laid-back of Hantengu's clones. The entire time he was battling against Genya, Tanjiro and Nezuko, he was constantly either praising or mocking them, and instead of taking the battle seriously, he saw it as nothing more than a game, seemingly to only take interest in the new experiences he was obtaining in the battle. This was demonstrated during his battle with Nezuko, when, instead of finishing her off immediately, he decided to tease and play with her despite being able to easily overpower her anytime he wanted. Later when Genya shoots off Sekido's hand, Karaku immediately takes an interests and decides to entertain himself by fighting Genya instead. This behavior easily got on the nerves of his fellow clones, such as Sekido, who constantly berated him for not taking on a serious outlook in battle, and Aizetsu, who was confused at why he was taking so long to kill Nezuko.
personality: As a holder of the fourth highest title in the Twelve Kizuki, Karaku was an extremely powerful demon. His Blood Demon Art allows him to create powerful gusts of wind, which if blown straight could throw enemies over a large distance, and if blown downward would crush them with immense pressure. In addition, as one of Hantengu's many emotional manifestations, Karaku was effectively immune to decapitation from a Nichirin Sword, meaning his only weaknesses were sunlight and the possibility that Hantengu's main body should die, and the demon took extreme measures to make sure the latter did not happen