Hermione (as Mafalda Hopkirk): "Oh dear! Perhaps you’d better take the day off!"
Reginald: "No – no! I must – today – must go – "
Hermione (as Mafalda Hopkirk): "But that’s just silly! You can’t go to work in this state – I think you ought to go to St Mungo’s and get them to sort you out... You simply can’t go to work like this!"
— Reginald trying to get to the Ministry of Magic for his wife's trial[src]

Reginald "Reg" Cattermole (b. sun in Libra, moon in Virgo[1]) was a wizard employed at the Ministry of Magic in the Magical Maintenance Department. He was married to Mary, and the couple had three children, Maisie, Ellie, and Alfred. He lives at 27 Chislehurst Gardens, Great Tolling, Evesham with his wife and children.


Early Life

Not much is known about Reginald's early life except that he began to work at the Ministry as part of the Magical Maintenance Department.

Infiltration of the Ministry


Ron (far right) disguised as Reginald Cattermole with Hermione and Harry (also disguised as Ministry workers)

"You realise that I am on my way downstairs to interrogate your wife, Cattermole? In fact, I’m quite surprised you’re not down there holding her hand while she waits. Already given her up as a bad job, have you? Probably wise. Be sure and marry a pure-blood next time... But if my wife were accused of being a Mudblood — not that any woman I married would ever be mistaken for such filth — and the Head of Department of Magical Law Enforcement needed a job doing, I would make it my priority to do this job, Cattermole. Do you understand me?"
Yaxley intimidating Reginald (actually Ron Weasley in disguise)[src]

On 2 September, 1997, Reginald headed for the Ministry not just for work, but for his wife who was to be tried by the Muggle-Born Registration Commission, as the Ministry had been taken over by Death Eaters and Muggle-borns were being persecuted. Outside, Reginald met Mafalda Hopkirk, who was actually Hermione Granger disguised by use of Polyjuice Potion.

She gave him a Puking Pastille, and when he started to vomit, she took some of his hair. Reginald still tried hard to get into the Ministry, desperate to be by his wife's side, despite repeatedly vomiting and being unable to walk straight, but Hermione advised him to go to St Mungo's. After being unable to stand any longer, he finally Disapparated.


Reginald (Ron in disguise with Polyjuice Potion) exiting the lift to deal with the raining in Yaxley's office

This was all part of Hermione Granger, Harry Potter, and Ron Weasley's plan to access the Ministry undercover. Hermione transformed into Mafalda Hopkirk, Ron used Reginald's hair and Polyjuice Potion to take on his form, and after Harry took on the form of Albert Runcorn, the three headed into the Ministry.

Reginald returned to the Ministry, pale but no longer ill, just in time to witness Ron, Harry, and Hermione assisting in the escape of Muggle-borns who had been detained by the Muggle-Born Registration Commission, including his wife. Harry advised them to take their children and leave the country while Lord Voldemort was still in power.[4]

Later life

It is unknown if Reginald and Mary took Harry's advice, or what happened to them after the Second Wizarding War ended. However, Ron was dubious they escaped as he got the impression Reginald was not quick-witted when he impersonated him.

Physical description

Reginald was described as being a small, "ferretty" individual[4].

Behind the scenes

  • LEGO Reginald

    Reg as a LEGO minifigure

    In Harry Potter and the Deathly Hallows: Part 1, Reginald Cattermole was played by Welsh actor Steffan Rhodri.
  • Cattermole weighs 168 pounds[1].
  • In the Deathly Hallows Part 1 film his physical appearance differs to that of the book. The book says that he is small and ferretty whereas in the movie he is rather tall (even taller than Albert Runcorn).
  • Cattermole only appeared three times as himself: once during Pius Thicknesse's speech, once lying on the floor unconscious after the trio stun him, and once when he shows up as the trio's leaving the Ministry.


"Reginald" is from Reginaldus, which is a Latinized form of Reynold. It is also a cognate with the Old Norse Rögnvaldr, from which the name Ronald is derived.


The Harry Potter Wiki has 9 images related to Reginald Cattermole.

Notes and references

  1. 1.0 1.1 1.2 1.3 1.4 1.5 Harry Potter Limited Edition - A Guide to the Graphic Arts Department: Posters, Prints, and Publications from the Harry Potter Films
  2. As only his wife was on trial, and not him, he must have been at least half-blood, possibly pure blood.
  3. LEGO Harry Potter: Years 5-7
  4. 4.0 4.1 Harry Potter and the Deathly Hallows, Chapter 12 (Magic is Might)

Ministry of Magic Departments
Unknown Levels
Committee on Experimental Charms · Magical Maintenance Department · Ministry of Magic Public Information Services · Department of Magical Education · Very Important Members of Section M.I. Trx. · Wizarding Examinations Authority · Research Committee · Exploding Bonbons Disposal Unit
Committee on Experimental Charms Personnel
Balfour Blane · Gilbert Wimple
Magical Maintenance Department Personnel
Reginald Cattermole · Orford Umbridge · Lift attendant · Man
Research Committee Personnel
Phoebus Penrose (Head)
Wizarding Examinations Authority Personnel
Griselda Marchbanks · Professor Tofty · Unidentified plump little witch examiner · Unidentified examiner with a wart on his nose