Mum

Mum is the mother of Horrid Henry and Perfect Peter and the wife of Dad. She always tells Henry off, and hardly Peter because Henry refers to him as "Goody-two-shoes". She constantly says "Don't be horrid, Henry!" to Henry in the TV series, and "Stop being horrid, Henry" in the animated version. She usually sends him to his room just like Dad. She does this by saying "Go to your room right now, Henry!". Unlike Dad's, her first name has not been revealed. After what happened in Moody Margaret Moves In, she disliked Moody Margaret. She is 6 foot 3.

She works part-time as assistant manager of a book shop owned by Mr and Mrs Mossy.

Appearance
She wears a purple cardigan with a pinkish shirt under it. She has blonde hair and wears glasses. Mum also wears blue jeans and pink ballet pumps. She has pale skin.

Personality
Throughout the show, Mum is shown to be quite stressed and irritable most of the time. Her favourite food is Tickly Treats and in Horrid Henry and the Tickly Treats Thief, she loses her temper when she mistakenly thinks Henry has eaten them. Mum yells at him to come downstairs for three days although it was Fluffy's fault.

Mum, along with Dad, is completely and utterly living in denial over Peter and Henry. Mum always believes Henry to be the one who does the bad things, and never Peter. This is proven in Perfect Peter's Horrid Day when Mum is telling Henry off for putting slugs in the chocolate box, and Peter says out loud "But Mum! It was me!". Mum then continues telling Henry off, and then hugs Peter and praises him afterwards.

She treats Henry unfairly most of the time, sending Henry to his room and banning him from watching TV, pocket money, loud noise, sweets, and the computer. She refers Peter to seemingly unfair names like "sweetie pie," "darling," "bunny hop," "lumpkin" and "poppet", but she never calls Henry any of that. She also acts slightly meaner than Dad towards Henry, and even in one episode, she got Dad in trouble. Another sign of harshness is in Horrid Henry: Happy Birthday Peter!, which is where she says it was lovely that Henry could have the chance to disappear, much to Margaret's disgust.

Despite all of this, Mum still cares about Henry, which is shown in Horrid Henry and the Perfect Plant, when Henry gets a nightmare and screams for her. She rushes over to him and makes sure he is okay.

Trivia

 * In Horrid Henry: Happy Birthday Peter!, it showed when Colin the Clown's next trick is to make Henry disappear. Mum bravos because she wants to get rid of Henry. This shows she genuinely despises Henry.
 * Mum likes Gross Class Zero comics. Indicated in Horrid Henry and the Special Spinner, where she is seen reading one and telling Henry that they are really good.
 * She has only broken the fourth wall once, in Horrid Henry My Weird Family.