Glass Baby

The Glass Baby is a character in the Fables comics.

Background
When Mary conceives a child with the Knave of Hearts, she struggles to give birth, prompting the Knave to cut Mary open and rip out a baby made from glass. Mary dies, while the Knave leaves with the glass baby, planning to use him to flee the kingdom. However, Mary's vengeful reflection Bloody Mary lives on, tracks down the Knave and spitefully shatters the baby by throwing him on the ground. Bloody Mary then collects the shards of the glass baby and shoves them into her skin to keep her child close.

The Wolf Among Us
The following information comes from the comic Fables: The Wolf Among Us, which means it may not be canon. In the Silvering, the Crooked Man removes Bloody Mary's shards and gives them to Abigail Williams, who rebuilds the glass baby. However, Abigail fails to fully revive the baby with the heart of Grendel's mother, so they turn to Aunty Greenleaf to carry out the ritual. Using the baby's powers, the Crooked Man's gang travel to Castle Allerleirauh, where King Edward demands his daughter Faith in return for the magic word to activate his donkey's powers, so the Crooked Man uses the glass baby to travel to Fabletown and abduct Nerissa.

Appearances
The Wolf Among Us (Comic)=
 * Issue 29 (flashback)
 * Issue 30 (flashback)
 * Issue 36
 * Issue 37
 * Issue 39
 * Issue 42
 * Issue 43
 * Issue 44
 * Issue 45
 * Issue 48