Judas is a character unlocked after beating 
Satan for the first time. Judas starts with one red heart container, and has 
The Book of Belial upon starting, as well as 3 coins. Judas also has a 1.35× damage multiplier.
Dark Judas[]
When a character dies after picking up the item 
Judas' Shadow, they will respawn as Dark Judas. Dark Judas spawns with two 
Black Hearts, a damage multiplier of 2.00 (instead of Judas' 1.35 multiplier), and a base speed of 1.1. Dark Judas has the highest base damage multiplier of all the playable characters.
Dark Judas can still gain heart containers despite starting with none.
Dark Judas is unable to obtain red heart containers. Any health-up items he collects will grant Black Hearts instead.
Dark Judas is considered by the game to be a separate character from Judas, but any achievements and unlocks that require Judas, including his Completion Marks, can be done by Dark Judas. (This means turning into Dark Judas using another character will not give that character any completion marks.) He will also receive 
Tainted Judas' bonus effects when using 
Dark Arts.
Notes[]
- Judas has a great damage sustain during the run due to the
The Book of Belial; try to keep the item until you have enough damage to grab another active item.
- The Book of Belial is also beneficial to hold on to, as it guarantees that the Devil Room or Angel Room will open after defeating a boss.
- The Book of Belial no longer guarantees a Devil Room or Angel Room, but still increases the chance to get one.
- It is beneficial to accept health upgrades during the run, as Judas can be challenging without enough health. Grabbing items such as Bucket of Lard early in the game could be crucial for a good run.
- Dead Cat can prove very useful if found early enough since Judas starts with only one heart container. As well as granting 9 additional lives, it is also one of the Guppy items.
- Scapular, Monkey Paw, Glyph of Balance, Whore of Babylon and other "low health activation" items are helpful for early floors, due to his low health.
The Book of Belial is also beneficial to hold on to, as it guarantees that the 
Item Interactions[]
- Birthright: The Book of Belial becomes a passive item that can be held beneath other active items, similar to Book of Virtues. May stack with Book of Virtues. If Judas is not currently holding The Book of Belial, he receives it. The damage boost received from The Book of Belial scales with the amount of charges the active item above it has; may not work with one-time-use items, items with unlimited use, timed recharges, or items that do not follow normal room charge rules (Isaac's Tears, etc). Has special interactions with certain items — see The Book of Belial for more information.
- Blood of the Martyr: Synergizes with Book of Belial for an extra 1.5× damage multiplier.
Unlockable Achievements[]
Trivia[]
- Judas appeared in the original Binding of Isaac.
- Judas is a reference to Judas Iscariot, the Twelfth Disciple of Jesus Christ. Judas betrayed Jesus to the Romans in exchange for thirty pieces of silver, represented by the three coins Judas starts the game with. Moreover, the coins are also believed to represent the three Abrahamic faiths, Judaism, Christianity, and Islam.
- Contrary to popular belief, Judas's fez is not a reference to the game Fez, created by Phil Fish. Edmund McMillen has stated that the initial statement was a joke and that he used the fez due to it being easily recognizable.
- In the original Binding of Isaac, Judas was unlocked by beating Womb for the first time. In The Binding Of Isaac Rebirth, it's Eden who is unlocked with this method, with the respective cutscene being changed accordingly.
- When reviving using Judas' Shadow, entering a miniboss fight will refer to the player as "Black Judas".
- Judas's locked character icon is a locked box with his fez sitting on it.
Gallery[]
Judas's transition screen portrait.
Dark Judas's transition screen portrait.
Judas's locked character icon.
References[]
 Judas Unlocks 
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 Satan Unlocks
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 Characters
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 The Binding of Isaac: Rebirth
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