Binding of Isaac: Rebirth Wiki
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(in Repentance)

Ultra Death is a boss added in The Binding of Isaac: Repentance and is the last of the Ultra Harbingers fought before Boss The Beast ingameThe Beast in HomeHome.

Behavior[ | ]

Unlike the other Ultra Harbingers, Ultra Death has only one phase and has three attacks which he cycles through indefinitely:

  • Summons a rectangle of 11 Ultra Death ScytheUltra Death Scythes which close in towards Ultra Death's position and continue in the same direction until disappearing off screen. Ultra Death uses this attack 3 times in a succession.
  • Flies off screen, then reappears travelling slowly while summoning waves of Ultra Death HeadUltra Death Heads which move up and down across the screen in the same direction. At the end of the attack, the skulls freeze in place and Ultra Death summons three harmless scythes which spin outwards, destroying the skulls.
  • Immediately after the previous attack, the screen darkens and Ultra Death disappears into the darkness. Ultra Death appears next to Isaac and swings his Scythe before disappearing again, darkening the screen with each attack. This attack is repeated 4 times, afterwards, the screen returns to normal and Ultra Death reappears.
    • His position during this attack can be indicated by a faint glowing red eye.

Gallery[ | ]

Trivia[ | ]

  • Ultra Death, like the other Ultra Harbingers is an upgraded version of his regular counterpart, Boss Death ingameDeath.
    • Unlike the others, he has the greatest variation in behavior from regular Death- notably the lack of a second phase.
  • The violin heard in the section of Revelations 13:1 that plays during Ultra Death's fight is performed by Carla Kihlstedt, the voice actor for Boss Mom ingameMom.
  • Ultra Death can be seen facepalming in the background after killing Boss Ultra War ingameUltra War.
  • The wave of Ultra Death Heads loosely resembles one of Boss Conquest ingameConquest's attack.
    • This could be compensation for Conquest's lack of appearance despite his Harbinger role.
  • Ultra Death's glowing eye during the darkness attack could be a reference to the Terminator series, as Ultra Death bears some resemblance to the Terminators seen in those movies.
  • Ultra Death's glowing eye is actually invisible during the whole fight but active the whole time, and becomes visible when the room is darkened. Using XIX - The Sun?XIX - The Sun? darkens the arena, making it visible.
  • Ultra Death is male.


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