Isaac

This article is about the character. For the boss of The Cathedral, see Isaac (Boss).
**Isaac** is the main character of the series, returning from the original *The* *Binding of Isaac* from 2011. Isaac is the only character unlocked by default.

Isaac starts with three Red Heart containers and one Bomb. He will also start with  once it is unlocked (after defeating Isaac as  ???).

## Notes

* that Isaac can start with does not increase the special counter.

## Item Interactions

* : All new item pedestals cycle between two options. Previously seen items are unaffected.

## Unlockable Achievements

* Isaac's Head - Complete the Boss Rush as  **Isaac**.

* Lost Baby - Defeat Mom's Heart on Hard mode as  **Isaac**.

* Mom's Knife - Defeat Satan as  **Isaac**.

* Isaac's Tears - Defeat Isaac as  **Isaac**.

* Missing Poster - Defeat The Lamb as  **Isaac**.

* The D20 - Defeat ??? as  **Isaac**.

* Lil' Chest - Defeat Ultra Greed as  **Isaac**.

* D1 - Defeat Ultra Greedier as  **Isaac**.

* Fart Baby - Defeat Hush as  **Isaac**.

* Cry Baby - Defeat Mega Satan as  **Isaac**.

* D Infinity - Defeat Delirium as  **Isaac**.

* Meat Cleaver - Defeat Mother as  **Isaac**.

* Options? - Defeat The Beast as  **Isaac**.

* The Broken - Use  (etc.) to open the hidden closet in Home as  **Isaac**.

* Buddy Baby - Earn all Hard mode Completion Marks as  **Isaac**.

## Gallery

* Original concept art for a character who would eventually be remodeled to Isaac.
* Isaac's transition screen portrait.

## Trivia

* Isaac is a reference to the biblical story of the binding of Isaac, in which Abraham is commanded by God to sacrifice his only son, Isaac, to prove his loyalty and love.
	+ *"Then God said, 'Take your son, your only son, whom you love — Isaac — and go to the region of Moriah. Sacrifice him there as a burnt offering on a mountain I will show you.'"* (Genesis 22:2)
* In a response to TBoI Youtuber Sinvicta of whether there was any concept art of what Isaac's original design was, Edmund McMillen confirmed that Isaac's design was originally one of an Octorock while showing very similar features of how the gameplay would be modeled by posting an old concept art.
* Edmund has stated that Isaac is left-handed, but in the opening cutscene, Isaac is holding a pencil with his right hand.
	+ This could be a reference to the Catholic bias against left-handedness, stemming from Matthew 25:33 proclaiming that God will put those deserving to ascend to Heaven on his right-hand side and put those deserving to descend to Hell on his left-hand side. Isaac's mother could have forced him to learn things the "righty" way for fear of him being "evil," the general practice of forcing left-handed people to use their right hands having been a practice for a long time, with the acceptance of left-handed people only starting to show in 1971.
* Contrary to previous theories made about Isaac, he does not have a sister.
* Isaac is bald because his mother shaved his head. This could be a reference to the *Nazarite Vow* in Numbers 6:1–21.
	+ Isaac's natural hair color is strawberry blonde.
* Isaac has Irritable Bowel Syndrome.
* Isaac's dad is a handyman.
* Isaac's full name is Isaac Moriah, and he is 5 years old.
	+ This is in reference to Mount Moriah, the place where Abraham takes his son Isaac to be sacrificed, in the Book of Genesis.
* Isaac's racial background is White/Hispanic.
* By around the events of The Binding of Isaac, Isaac was already homeschooled.
* Edmund McMillen confirmed that Isaac's status is deceased.
* Isaac is circumcised. This was confirmed by Edmund McMillen during a YouTube stream.
* Isaac's voiceover in Rebirth was done by Tallulah Bossi, Matthias Bossi (Member of Ridiculon and voice of Dad/Narrator) and Carla Kihlstedt's (Musician and voice of Mom) daughter. For Repentance, the voice was done by their son, Viggo Bossi.
* Isaac is either gender-confused or genderfluid.
* On the Unboxing Of Isaac stream #5, Edmund McMillen stated that Isaac is 3 apples tall.

## References

1. ↑ http://4ms.me/165we0q
2. ↑ https://twitter.com/edmundmcmillen/status/1227014269612351488
3. ↑ edmundm:73658340217
4. ↑ https://archive.md/iz0ON
5. ↑ https://archive.md/wrk2a
6. ↑ https://archive.md/kFkQb
7. ↑ https://archive.md/nNjSg
8. ↑ https://twitter.com/edmundmcmillen/status/1486223220386582529
9. ↑ https://twitter.com/edmundmcmillen/status/1486232323754364930
10. ↑ https://twitter.com/edmundmcmillen/status/918669913660600320?lang=en
11. ↑ https://twitter.com/edmundmcmillen/status/1336193048741466112?lang=en
12. ↑ edmundm:98101937665