by MRS Jeevas


© Rochelle
*** Personal Data

True Name: Simon John Campbell

Birth: July 24th, 1994

Height: 5ft 10"

Weight: 10 stone 2lbs

Likes: The Mafia; Mello; Physics

Disikes: Losing

Basic Data

One of the children raised as possible heir to the L name. He was 5th in the 5th generation Wammy's House (unofficial) rankings and wasn't actively involved in the Kira case.


Simon Campbell was born, on July 24th, 1994, in Al Khor, Qatar, to James and Kate Campbell. James was working on a contract in the financial district there and it lasted unti Simon was five. The family then relocated to Jidd Haffs, Bahrain, for two years, before returning to Qatar.

Privately tutored, Simon enjoyed a high standard of education. He was also encouraged to take an interest in the world around him, though his main passion lay in sciences, particularly Physics.

On June 20th, 2005, his sister, Maisie Rose Campbell, was born, also in Al Khor, Qatar. She also showed signs of being a genius child.

In September 2008, the family were preparing to move again, this time to the United Arab Emirates, where James had project management work. The family packed up their belonging in Qatar and had them shipped to UAE. They took two weeks out of their schedule to visit Egypt. On September 19th, 2008, James and Kate Campbell were amongst tourists abducted, near Aswan, by Sudanese militia. Simon and Maisie were still at the hotel complex, with their nanny.

Other hostages were eventually released, after negotiations by Egyptian and Italian ambassadors with Sudan. They reported that James and Kate Campbell had been killed. Simon and Maisie Campbell were taken to a Wammy's Group orphanage, in Egypt, pending a search for guardians.

On February 21st, 2009, they were both transported to Wammy's House, in England, becoming the only siblings ever to reside there. Simon took the name, Neuron, and Maisie became Kato.

Why Neuron?

Simon took the pseudonym, Neuron, with reference to the core component of the brain. Maisie took the pseudonym, Kato, which had been her father's nickname for her mother.


Neuron hero-worships Mello and, through stories about him, developed a fascination with the Mafia. Despite this, he is generally perceived as bookish and insular.


Neuron is extremely adaptable. He is also very good at Physics.


~ Collated by MRS-Jeevas

"You're Mello and Matt! You're the ones who caught Kira! I've had you described. I've heard all about you." (Neuron) pushed back from the table. "Wow! I can't believe you're here!"
Neuron, Poisoned Rationality: Chapter 15 – Barricades

"Yes, and if you lay a finger on her, my capo will start something with your family."
Neuron, Watari Pt 1: L's Heirs: Chapter 21 – Garden

"I'm going to be a button man. I met a man, who can get me in. I'm helping him out with some things."
Neuron, Watari Pt 1: L's Heirs: Chapter 21 – Garden

"I admit it, I was excited at first. It was like a drug or something. The power and... I'm sorry."
Neuron, Watari Pt 1: L's Heirs: Chapter 22 – Fianna

"I prayed! I prayed! I prayed! I...."
Neuron, Watari Pt 1: L's Heirs: Chapter 22 – Fianna