Jacob & Esau

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Jacob and Esau are unlockable characters added in Antibirth. Both Jacob and Esau are controlled simultaneously, and they have separate items, trinkets, and health bars. If one of the two characters dies, the other will also die.

Both can hold active items: the active item key (SPACE) will use Jacob's item, and the card/pill use key (Q) will use Esau's item.

Both Jacob and Esau will automatically use all pills, cards, and runes they pick up.

Jacob and Esau are unlocked by defeating The Witness for the first time.

Tips
See Tips/Jacob & Esau.

Unlockable items
Note that defeating Mega Satan does not unlock anything or give a completion mark.
 * Rock Bottom - Complete the Boss Rush.
 * Double Baby - Defeat Mom's Heart or It Lives on Hard.
 * Red Stew - Defeat Satan.
 * Damocles - Defeat The Lamb.
 * Jacob's Ladder - Defeat Isaac.
 * Birthright - Defeat ???.
 * Magic Skin - Defeat The Witness.

Trivia

 * Jacob & Esau are the twin sons of Isaac from the Book of Genesis. Esau is described as being "red all over" when he was born, hence why his skin is red in this game. The reason why Esau has a sorrowful grimace may be of a story in Genesis where Esau was dying of hunger after an unsuccessful hunt, in which he asked Jacob to make him something to eat, but in return, Jacob wanted the heirloom blessing of his father, which had been bestowed upon Esau. Esau accepted the offering and regretted his choice afterward.
 * If the player enters the seed "FART FACE" and selects Jacob and Esau, they will be reskinned into Green Pepper and Baggy Cap, two of _Kilburn's original characters.