Considering this is a webcomic that absolutely runs on the Rule of Crazy Is Cool. It's bound to have a truckload of references.
- The good doctor is a very big fan of the Dark Knight.
- As a six-year old he wasn't fully interested in becoming a ninja. Up and until his parents let him have a read of Batman comicbooks which gave him a full 180 into wanting to become a Ninja just like Batman and unfortunately for them. It stuck well into adulthood.
- More of Doc’s Batmaning around here, here and here.
- On this page, the "BUT ➡" and "AND SO ⬇" are a tribute to the comic Jimmy Corrigan: The Smartest Kid of Earth.
- This page, rife with Legends of the Hidden Temple references (including Olmec the giant stone head and the infamous Silver Monkey).
- When the Doc was dead/not-dead, the subtext mentioned that the skeleton maitre'd wasn't Spanish, not wearing a black tux, and was not a travel agent, sorry.
- In this page, look closely at the second panel, in other words The good Doctor's notes on Time Travel back in college. Phone booths....
- "I do not kill with my gun. I kill with my heart. He who kills with his gun has forgotten the face of his father." It becomes a plot point when Dark Smoke Puncher uses it to figure out Gordito is exaggerating his bad-ass qualities.
- At the bottom of this page, Frankenstein's Mongo.
- Alt Text: He also learned that fire bad.
- The signature weapon for each of the four McNinjas (at least during the Punch Dracula arc): a katana, two sais, a staff, and nunchucks. Sound familiar?
- This strip contains a recruitment pamphlet for the Foot Clan. The Alt Text lampshades it as well.
- There's only one way for a Ninja to travel the sewers.
- When Dr. McNinja realizes that Sparklelord has a possessive influence and throws him into King Radical's portal, the Alt Text notes that it's "Not exactly a church bell, but we make do."
- The dinosaur toy in this strip and the T-Rex in the last panel of this strip strike similar poses to the star of Dinosaur Comics, and his one line pretty much sums up the comic in question.
- T-Rex: I GOT OPINIONS.
- "It seems logical to mistake me for Dr. McNinja, as we are both doctors and he in fact does the exact same thing I do. McNinja and I even go to the same barber... although I have a slightly better haircut."
- Dark Smoke Puncher has 99 problems.
- Doc's plan to clone himself in order to study everything he wants to in only eight years and then reunite the duplicates at the end is almost identical to a plan that Jamie Madrox (aka Multiple Man) pulled off in an issue of X-Factor.
- And the alt-text even mentions the similarities to a certain character from Harry Potter.
- To Somewhere in Time in the Alt Text to this page.
- And that comic itself is one to Back to the Future Part II.
- The Nasaghasts take of the form of skeletons wearing space suits, similar to the Vashta Narada of Doctor Who.
- His entrance into the series of tunnels under Cumberland using a dead Pterodactyl (or something) as a hang-glider pulled by a motorcycle has to be a shout-out to Yor, Hunter of the Future.
- The pilot of Doc's plane in this comic's last words are a reference to Red vs. Blue.
- Judy is a shout out to Koko, a cat-loving female gorilla capable of sign language.
- "Did you know that you can get a loan from a bank? It turns out that's how they make money." Not anymore they don't! Ha ha, the economy! - Ed.
- Doctor McNinja Finds a Raptor in his office! What does he do? Name it Yoshi.
- There is no Jenny... ONLY ZUUL!
- There is only one way for a ninja to get around a sewer.
- "It's like he's Oddjob in Goldeneye!"
- King Radical's non-radical mooks look like a mix of Star Wars Imperial foot soldiers (with the outfit) and Warhammer 40K's Imperial Guard (with the lasrifles and Zerg Rush tactics).
- And then there's the time he has to be a Bad Enough Dude to Save the President.
- One of the Radical Landers resembles a beholder, and the Alt Text outright sys that when designing Radical Landers, he tends to draw inspiration from dinosaurs or Dungeons & Dragons