Rubicante is one of the twelve demons of the Malebranche. Rubicante is known as the "Red-faced Terror" among the demons, and the reasons for this are, of course, his methods of torment towards the damned souls in the Eighth Circle of Hell. Rubicante causes one's own blood to boil within them during their heated debates and arguments against one another.
As the conversation grows more vicious, the temperature of their blood rises to agonizing levels to the point where the souls can literally feel their blood is ablaze within them.
It first reaches their face, where they not only scream in physical pain, but from great mental anguish and forcing themselves to literally grip and claw their faces to stop the boiling blood from burning. Rubicante is also known to be the silent one of the Malebranche.