Diary of a Wimpy Kid Wiki



Diary of a Wimpy Kid Wiki

I'm ownwy thwee!
Manny's response to whenever he breaks Greg's stuff

Manny Heffley is the younger brother of Rodrick and Greg who is constantly pampered and spoiled by his parents. As the youngest child of the Heffley family, Manny plays a major role in Diary of a Wimpy Kid series, having appeared in all the main series books to date. However, he has never been a protagonist in the series.

Manny is played by identical twins Connor and Owen Fielding in the first three Diary of a Wimpy Kid film adaptations, and triplet brothers Dylan and Wyatt Walters in the Long Haul movie. He is also voiced by Gracen Newton in the animated adaptations.

He is the main antagonist of Diary of a Wimpy Kid: Cabin Fever.


Manny is a small kid with three strands of hair, just like his brother Greg. Manny wears a white shirt, black shorts, and white shoes. He is the youngest and shortest Heffley family member. Manny is drawn with a goofy overbite and long nose for his size.


Manny Heffley is a selfish and spoiled toddler. Whenever he doesn't get his way, will do things such as removing all the electricity at the house except for his room, as shown in Cabin Fever. Greg believes that his Mom and Dad treat Manny like a prince, but that is far from the truth as they treat him this way out of fear of what he will do to them. He watches a show called "The Snurples," which according to a newspaper sets kids back in social skills and language development (Manny starts speaking gibberish). He has never been a protagonist. Manny has shown that this is true - he has no real friends and never plays with other kids in playgroups, but has imaginary ones and uses these to get out of trouble and get extra food, etc. Despite his seemingly air-headed exterior, Manny has shown that he can be very cunning, deceitful, manipulative, and intelligent for his age in unexpected ways. When Susan let him play on Greg's Net Kritterz account, he figured out how to sell all of his brother's items and change his password. He has also locked out the entire family from watching any TV shows except for his personal favorite cartoons. He also has been shown to speak Spanish, shown in The Long Haul.

Manny has also been characterized as extremely uncaring and holds powerful grudges that have endangered the family on multiple occasions. One of these is shown in Cabin Fever, where he shuts off all the power to every room except his own, just because he wasn't taught how to tie his shoes. This caused the entire family to suffer in cold weather and starvation until Greg finally discovered the scandal. Since his mom Susan is shown to hold grudges herself, it's highly likely that Manny inherited this trait from her.

Manny's unusual personality can, however, significantly help the Heffley family as a whole. Manny can speak Spanish properly, and that's just from listening to hours of Spanish-English wordbook-CD that his mother borrowed from the Spanish library. He also has an extreme ability to learn new things and abilities, which again, is shown when he learns to speak proper Spanish after just a few hours. In The Deep End when Susan allowed Manny to put the last piece in puzzles, he uses this knowledge at the end of the book to steer the RV into the gap of the broken bridge allowing everyone to leave Campers' Eden.

The fact Manny is able to learn perfect Spanish, change Greg's password and the parental lock, kill all the lights except for his room, build a house using only scrap wood and a toy toolbox, and steer an RV to fix a broken bridge is quite surprising for a child his age, meaning he is quite intelligent but however, is still socially awkward.

It is likely that Manny knows about his parents' favoritism towards him, and he takes advantage of this. This includes breaking Greg's gaming console, drawing on his bedroom door, taking a dirty magazine to daycare, and twisting the "No Swearing" rule in such a way that he makes money out of it.

Manny also gets anything and everything he wants, and his parents trust his lies to Greg and Rodrick, so they end up getting grounded, even though Manny deserves it.



  • Given estimates made based on illustrations of him, Manny Heffley is most likely between 1' 3" (38.1 cm) and 1' 4" (40.64 cm) tall, which would make him shorter than the average newborn baby. However, this is entirely conjecture, as his height has never been stated definitively within the series.
  • Manny was originally 5 years old instead of 3, until Rodrick Rules. This is shown by how Manny says "I'm ownwy five!" instead of "I'm ownwy three!" in the online book, and how in the first book, after he yells "Bubby" at Greg on the stage, Greg says he's been able to keep that nickname quiet for 5 years. However, this has been retconned, as in later books and films Manny is always said to be 3.
  • Unlike most 3 year olds, he misbehaves on purpose and likes to get away with it without getting in trouble since he already knows he won't get in trouble and rather wants Greg or Rodrick to get in trouble instead. It is likely that Manny knows that most 3 year olds wouldn't misbehave on purpose which is why he always gives that excuse.
  • In Rodrick Rules, Greg says that even though Manny drives him crazy, Rodrick has been using Manny instead of Greg to help sell chocolate bars for his school's fundraiser since he started to talk, which Greg is grateful for.
  • In the online version, Manny is allergic to peaches. Greg also implies that he is allergic to peaches, in The Ugly Truth.
  • The only members of the family who do not appear to like him are Aunt Cakey, Greg Heffley, and Rodrick Heffley, despite the love towards him.
  • Manny is quite smart for his age, as he knows how to change the password to both Greg's Net Kritterz account, and the TV parental locks so he can watch whatever he likes, whenever he likes. He can also speak perfect Spanish and the Snurple language fluently relatively quickly. Real life 3 year olds wouldn't be able to learn this quickly and are not that smart enough to do these things though some can speak fluent Spanish (mostly if their parents also speak Spanish).
  • Manny can also build an entire house with just toy tools and scrap wood, even though the Heffleys failed to do so with the entirety of Aunt Reba's inheritance.
  • Manny loves Bitter Apple Spray, so he probably likes sour and bitter food.
  • According to The Wimpy Kid Movie Diary, the main reason the producers picked twins was because they felt that twins would be easier to work with (on account that there would be a backup should one refuse to cooperate).
  • Manny seems to be fond of keeping random animals as pets. In The Long Haul, he is attached to The Pig and repeatedly attempts to get him back. In The Getaway, he attempts three times to keep wild sea animals as pets: first with hermit crabs and snails, second with a baby sea turtle, and third with a Box Jellyfish. Surprisingly, in The Meltdown, he doesn't seem too concerned with the pig being lost, and forgets about it.
  • He may be modeled after Igdoof's little brother.
  • Manny got brand-new things when he was a baby, like pacifiers, and his bed looked even newer than Rodrick's.
  • Jeff Kinney said that he gave Manny his name because he originally didn't know it was short for Emmanuel. Rather, he thought it was meant to be an ultra-masculine name. "So, I wanted to have this tiny boy have this over-masculine name".
  • Manny barely appears in Double Down and only makes a few cameos.
  • Manny's hairstyle is very similar to Greg's, the only difference is that Manny's hair is shorter than Greg's.
  • Manny is speculated to be a psychopath as he displays many traits of one such as faking emotions, being rather intelligent for a three year old, faking apologies and being very manipulative.
  • It was mentioned in The Wimpy Kid Do-It-Yourself Book that he broke Greg's Pinkie by slamming in the door. This further confirms his psychopathic tendencies.
  • However it won't be appropriate to call him a psychopath as even psychopaths know the limits and have at least a bit of conscience
  • He was originally a comic drawn by Igdoof in the titular comic series called *'Manny the Talking Sideburn'. This was recycled for the DIY book, but Manny is not the talking sideburn.
  • He also appeared in a comic titled 'Igdoof's Tips for Avoiding Sibling Victimization'
  • In "The Ugly Truth" it is revealed Manny licks the flavor of barbecue chips. Greg had to learn that the hard way. When they had a maiden, that fooled her into thinking the barbecue chips were plain chips. She wrote a message to Susan that she prefers barbecue chips over plain ones.


See Manny Heffley/Gallery