"Don't pretend, Runcorn," said Mr. Weasley fiercely. "You tracked down the wizard who faked his family tree, didn't you?"
"I — so what if I did?" said Harry.
"So Dirk Cresswell is ten times the wizard you are," said Mr. Weasley quietly, as the lift sank ever lower. "And if he survives Azkaban, you'll have to answer to him, not to mention his wife, his sons, and his friends —"
"Arthur," Harry interrupted, "you know you're being tracked, don't you?"
"Is that a threat, Runcorn?" said Mr. Weasley loudly.
(C13 – Deathly Hallows)
"It's a warning Mr. Weasley," said Harry. "The real Runcorn wouldn't say it, but I would."
"What is the matter with you?" blundered Mr. Weasley furiously. "Have you lost your marbles, you useless excuse for a wizard."
"Runcorn is a useless excuse for a wizard, yes," said Harry. "But is Harry Potter."
Mr. Weasley looked lost. Harry decided to help him out one more time.
"What exactly is the function of a rubber duck?" Harry asked.
Dawning understanding appeared in Arthur's eyes.
Before Harry knew it he was shoved into the wall of the elevator.
"What in bloody hell are you doing, Harry?" said Mr Weasley. "Are you trying to get killed?"
"I am on a mission, Mr Weasley," said Harry. "The toad has something we need to end the war."
Mr Weasley stared at Harry for what felt like minutes but was really only about ten seconds.
"Here," said Mr Weasley, suddenly pushing something into Harry's hand. Harry looked at his hand and found a chocolate bar and Peruvian Instant Darkness Powder.
"She has Dementors all around her as security," said the man. "Use the powder when you're leaving. Make them think you're leaving by Floo. Come straight to my office afterwards. I'll get you three out."
The chocolate helped Harry fuel a bigger Patronus when they escaped.
When the Ministry atrium finally cleared of black smoke over an hour later, Yaxley discovered one Floo gate open. He went through it only to find himself shooting out of a sunken fireplace on the Titanic, courtesy of Arthur Weasley. He never made it out. And neither did Travers who followed him in seconds later. No one ever figured out it was Arthur.
Harry, Ron, and Hermione hid in Arthur's office for three hours while the Ministry sorted out the mess. In all the pandemonium Mr Weasley had snuck in Muggle disguises as they were checking everyone over by magical means.
A blonde Harry, a dark haired Ron, and a sandy haired Hermione managed to leave the Ministry without detection with Arthur's help.
Now they were enjoying a delicious kidney pie at Grimmauld Place, courtesy of Kreacher.
"Thank god we left using our brains," laughed Ron.
Harry looked at their fourth guest having dinner with them.
"Thank you Mr. Weasley."