The 9th fatui harbinger Regarator or Pantalone. 

Despite his status and how wealthy he is he can get so distracted by work that he forgets about his needs including but not limited to; sleep, hunger, thirst, bladder, stress, and so on... It can be quite a pain and he can wear himself out or end up in tricky situations... But even when he's not working he's still always lost in thought and forgets his needs. Seems not even breaks can save him from total exhaustion/humiliation, depending. 