A/N This was written in response to the challenge to write a fic about Mundungus Fletcher. So I chose a point in time where I could have a slightly more savoury narrator! :) Snakes and Ladders everyone!
Kreacher stood in the hallway of 12 Grimauld Place. It had become very quiet since the blood traitor son of the mistress and his friends had left. Kreacher liked the quiet. It gave him time to talk to the mistress, which was something Master Sirius had never allowed.
"Now now mistress. The blood traitors are gone and mistress doesn't need to worry about them," Kreacher soothed the woman in the portrait. Just as he began to polish the frame of her portrait, the door squeaked open. The mistress, whose curtain was open for cleaning, began to yell.
"Filth! Scum! Invasion of the noble house of Black!" The stumpy wizard in the door sent a spell at her that shut her curtains.
"Can it, you awful bitch," came the voice of Mundungus Fletcher. Kreacher shuttered inwardly.
"The filth is back to defile the House of Black," he muttered under his breath. Kreacher didn't bother to bow to Mundungus. Master Sirius was no longer around to tell Kreacher to listen to the blood traitors and mudbloods.
Making his way back to his cupboard in the kitchen, Kreacher was glad that he had taken the time to keep his masters' things safe. He ambled into his nest of blankets and things and snuggled in.
A while passed, and Kreacher could almost convince himself that nobody was there except for him and the mistress. However his perfect facade did not last as Mundungus flung open the doors on Kreacher.
"What have ye hid in this little scum hole now, house elf," Mundungus muttered, half to Kreacher and half to himself.
"You will not take the artifacts of the Noble and Ancient House of Black!" Cried Kreacher, but to no avail. Mundungus flung him aside and took it all.
The Black family cups with their crest, Master Orion's Order of Merlin, and even Master Regulus's locket went into Mundungus's loot bag. Once he had taken all that he wanted from the house, Mundungus left, leaving Kreacher shuddering in the knowledge that he had let someone defile the Noble and Ancient House of Black.