|AKA|| Angel (by Gadget)|
Princess (by Gadget)
Sophie (in other languages)
Pretty Penny (by Talon)
|Occupation|| Jr. Detective|
|Family|| Inspector Gadget (uncle)|
|Location|| Metro City|
Riverton, Ohio (in the live-action films)
|Portrayed By|| Mona Marshall (in the pilot)|
Cree Summer-Hayes (First season)
Holly Berger (Second season)
Erica Horn (Inspector Gadget Saves Christmas)
Michelle Trachtenberg (1999 film)
Caitlin Wachs (2003 sequel)
Tegan Moss (2001-2005)
Tara Strong (2015)
- "I feel like I've stepped in to a time machine, but I can't find anything that links them with M.A.D."
- ―Penny investigating the phony pirates[src]
Penny is the deuteragonist of Inspector Gadget and the tritagonist of Inspector Gadget, Gadget and the Gadgetinis, and Inspector Gadget 2. She is Gadget's niece, Fidget and Digit's creator, and Brain's owner. She is also the protagonist of it's 2015 CGI reboot. Penny secretly helps Gadget with his missions, but it is Gadget who ends up getting all the credit in the end, which actually makes sense because if Claw knew Penny was the real hero, she'd be in serious danger.
Penny likes to secretly help Inspector Gadget out with his missions, despite him always getting the credit afterwards. She usually uses her computer book and video watch to help her solve the cases. It is never explained where Penny got them or why she has them in the first place, but given Penny's super intelligence, she probably built it herself. In Inspector Gadget 2, Penny wants to be given a chance by her uncle to become a fellow detective and come with him on his missions, but he would never let her as she is too young. She does so, but ends up in danger and its up to Gadget and G2 to save her. However, at the end of the film, she is awarded a medal by Gadget for being a junior detective. In the 2015 series, she now joins Gadget on his missions and is an agent in training. Despite being Gadget's new assistant, he still doesn't listen to her and does what he wants instead.
Penny is Gadget's cute and tomboyish yet very beautiful niece and she secretly solves his cases for him, which Gadget is totally unaware of. Penny loves her uncle very much and looks up to him. It is never explained if she and/or Gadget have any other family members in the TV series, movies, or spin-offs, but Gadget seems to be the only family she has got. Penny foils Dr. Claw's plans, leaving Gadget to get all of the credit for doing so, even though he didn't do anything at all. This makes sense because Penny would be in serious danger, if she got the credit. Penny often snoops around M.A.D.'s hideout to find out what they are planning; however, she normally ends up getting caught by Claw's henchmen and she either escapes by herself or calls her loyal pet dog Brain to rescue her. But when she and Brain are both captured, Gadget becomes surprisingly useful and competent and goes out to rescue both of them. Gadget loves Penny more than anything and he sees Penny as his baby girl. In the 2015 series, she is now a junior agent. She is a lot more flawed and active. She acts like a normal teenager when she's not on duty. She is right-handed and very intelligent in addition to her cuteness and beauty and she is capable of hacking into almost any computer-based system. Despite being fearless and a genius, Penny does have her flaws. It is shown in episodes such as Claw's Nephew, Gadget 2.0, and Eye of the Dragon that she has a strong weakness for boys and gets nervous when they're near her. She may be in love with Dr. Claw's nephews, Billy Thaw and Talon. In Inspector Gadget's Biggest Caper Ever, she is noticeably more selfish, spoiled, and self important. One of the many running gags was that she whines about a concert being sold out and ignores the fact that Gadget and the entire city was being terrorized by a dangerous pterodactyl. As karma, she is abducted by the pterodactyl and Gadget (out of extreme stupidity), ignores her pleas for help.
Penny has shoulder-length blonde hair worn in 2 ponytails. A possible episode of Gadget and the Gadgetinis may show some/all of her relatives with black hair. An episode of the original series may show some of her ancestors with blonde hair. Her eyes vary between blue or green. In Gadget and the Gadgetinis and Last Case, her eyes are purple-blue. Penny's age throughout the original animated series is 10 years old. 2 years later, she is 12 years old in Gadget and the Gadgetinis and Inspector Gadget's Last Case. 3 years later and she is 15 in the 2015 series. A year later she is 16 years old in the 2005 film Inspector Gadget's Biggest Caper Ever.
She wears a red short-sleeved T-shirt with a thick white stripe in the middle of her torso with olive green pants with light green knee patches, followed by red and pink sneakers. In season 2, she wore a blue and white football jacket. In the early 2000's, Penny wears a pink midriff shirt, a long sleeve turtleneck, brown baggy pants, and red sneakers. Her ponytails are also straight up. In Biggest Caper, she wore a red and white short sleeve shirt, blue jeans, and black sneakers. In the 2015 series, she now wears a red and white hoodie, blue jeans, red boots with white laces, and red finger-less gloves, though occasionally she can be seen in her outfit of the original cartoon.
- Penny's last name is unknown. While Inspector Gadget's last name is Brown in the live-action film, the animated series strongly implies that Gadget is his real last name. While one can assume Penny's last name is Brown or Gadget, she frequently calls him "Uncle Gadget," suggesting that Gadget may be her maternal uncle or that he had his gadgets before Penny was born or before she met him.
- In two episodes of the 2015 reboot, her middle name is revealed to be Ruth.
- It is never revealed why Penny is with Gadget and for some reason, the mere subject of Penny's parents are never brought up at all. One possible theory is that she may have been kidnapped from her where she used to live, which might or might not be Canada. However, this theory is somewhat complicated, and needs more critical thinking.
- Penny was Cree Summer's very first character. Ms. Summer reprised her role for Inspector Gadget: Gadget's Greatest Gadgets and the Robot Chicken episode, Adoption's an Option (Frank Welker also returned as Dr. Claw, MAD Cat, and Brain).