Orcus

The Orcus is a type of Pureblood Heartless that appears in Kingdom Hearts 358/2 Days. It resembles the Invisible Heartless, though all of its highlight areas such as its sword, horns and arm-wings are coloured a fiery orange. It appears as a boss that Roxas must fight on Day 352. It possesses similar battle techniques to the Invisible, though it is faster and stronger. Attacks with homing ability such as the Fire spell are recommended for dealing with this agile creature, though Thunder spells should be avoided as the Orcus' health is restored by such spells.