Katherine

“Will looked up in apparent relief when Charlotte and Tessa came in. "Will," Charlotte said, "You remember Miss Gray?"
"My recollection of her," said Will, "is most vivid indeed.”
― Cassandra Clare, Clockwork Angel

“Remember when you tried to convince me to feed a poultry pie to the mallards in the park to see if you could breed a race of cannibal ducks?"

"They ate it too," Will reminisced. "Bloodthirsty little beasts. Never trust a duck.”
― Cassandra Clare, Clockwork Angel

“So you're a Shadowhunter,' Nate said. 'De Quincey told me that you lot were monsters.'
'Was that before or after he tried to eat you?' Will inquired.”
― Cassandra Clare, Clockwork Angel

“No one expects Will Herondale to live past nineteen, and no one will be sorry to see him go, either -"
That was too much for Tessa. Without thinking about it she burst out indignantly, "What a thing to say!"
Gabriel, interrupted midrant, looked as shocked as if one of the tapestries had suddenly started talking. "Pardon me?"
"You heard me. Telling someone you wouldn't be sorry if they died! It's inexcusable!" She took hold of Will by the sleeve. "Come along, Will. This - this person - obviously isn't worth wasting your time on."
Will looked hugely entertained. "So true."
... Tessa frowned at Gabriel. "I think you owe Will an apology."
"I," said Gabriel, "would rather have my entrails yanked out and tied in a knot in front of my own eyes than apologize to such a worm."
"Goodness," said Jem mildly. "You can't mean that. Not the Will being a worm part, of course. The bit about the entrails. That sounds dreadful.”
― Cassandra Clare, Clockwork Angel