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She is a tiny, delicate girl, her skin the dappled brown of a doe, her hair a cloud of white around her head, and a miniature pair of blue-gray butterfly wings on her back. She’s also got at least some pixie in her, if not some imp.
She likes blowing things up.
The Bomb’s people died in a brutal, internecine Court war a century ago, leaving her on her own. She went into the human world and became a small-time crook. She wasn’t particularly good at it. Mostly she was just using glamour to hide her mistakes.
That’s when she meet The Roach. He spotted her and he pointed out that while she might not be much of a thief, she was a good at concocting potions and bombs. They went around together for decades. The Bomb described the Roach as being so affable, so dapper and charming, that he’d con people right to their faces, no magic required.
The Roach then had the idea that they should steal from the Court of Bone in the West. The con went wrong. The Court carved them up and filled them full of curses and geases. The Court of Bones then forced The Bomb and the Roach to serve them.
Then they screwed up a job, and Dain Greenbriar got hold of them. He had a scheme for them to betray the Court of Bone and join him. So they did and end up in Dain’s service instead.
However Dain is killed during the coronation anyway despite the Court of Shadows best efforts. After Dain’s assassination The Bomb goes to ground to avoid all the chaos that has unfolded in the court. She later meets up with the Court of Shadows after Cardan has been taken prisoner.
Cardan is left with the Court of Shadows and The Ghost and the rest of the Court allow him to play cards with them. In the center of the table were a pile of jewels and a jug of wine. With two empty bottles and rest beneath the table.
The Roach and The Bomb have a good relationship with each other. The Roach has been known to be playful with her, with the Roach playfully shoving the Bomb. The Bomb also has feelings for the Roach, as she told Jude that the Roach comforted her when they were in the Court of Teeth. The Roach also admitted to Jude that he has feelings for the Bomb. In The Queen of Nothing, after the Roach is poisoned, the Bomb tries to find a way to cure him. She unfortunately fails, and as a last resort asks Jude to heal him. Jude is successful and after the Roach wakes up, they confess their feelings for one another.
The Bomb at first is just a teacher of sorts to Jude. Throughout the course of the story, they grow very close and the Bomb confides in Jude about her feelings for the Roach. The Bomb is grateful when Jude manages to wake the Roach up after he was poisoned. In The Queen of Nothing, after Cardan is cursed, the Bomb stays by Jude's side loyally and kills anyone that was planning to assassinate Jude.