Douglas "Doug" is a student who attends Norrisville High.
Doug likes things to be logical, so he often points out people's flaws in their thinking or flaws about particular detail. He is also a tattletale and will tell everyone if someone is doing something against the rules. Due to his curiosity and desire to point out the obvious, people usually find him obnoxious and bothersome. Doug just wishes for people to be nice to him and to think things through like he does.
- Doug's voice actor is the Created of Randy Cunningham: 9th Grade Ninja of Scott Thomas.
- His name is announced in "Got Stank?". When he is thrown across the gym by Mick for trying to enter the Fish Cage, Randy calls out to him, "Nice try, Doug."
- His design is based off of Jeremy Polgar, an animator for RC9GN.
- He brought his science project, a volcano model, to the Norrisville High science fair in "Attack of the Killer Potatoes". However, the potato monster destroys it by crashing into it.
- Howard puts his empty bowl of chilli in Doug's backpack in "Sword Quest".
- He went to Ninja Camp.
- While wearing the school's mascot outfit, he gets shot with a laser from the I.D. Bot, which Howard is holding, in "The McHugger Games".
- The Ninja throws a ninja ring at the Prankzooka robot in "Pranks for Nothing", but the robot transforms it into an apple, which heads back towards Randy. Randy dodges, and Doug, who was standing behind him, gets hit with it. Howard walks over to laugh at him.
- He's the only student who gets stanked with a Carp Mascot Suit in The Three Mascot-teers.
- In "Randy Cunningham: 13th Century Ninja", he is revealed to be a tattletale, calling out Randy and Howard, the Sorcerer, and Randy again for their bad actions. Each time, Principal Slimovitz gets upset at him for tattling instead of punishing others.
- He is part of Principle Slimovitz's underground resistance and participates in the raid on Charlie Cluckers for food.