- In The Death Series. Johnny and the turkey reference Axe Cop and Dr. McNinja respectively.
- In the intro to Akihiko's story mode in Persona 4: Arena, he's accosted by a pair of thugs, one of whom pulls a gun on him. In Akihiko's words, "The problem is that he has to point the gun where he wants to send the bullets, and I can see him doing that.
"
- Hark! A Vagrant: The APE 2009 page depicts Gordito with his guns.
- The good doctor's webcomic is reference in After Zero.
- In one of the pages of the Girl Genius webcomic. If one looks closely, it appears that the doctor has an office in the hospital at Mechanicsburg. Which... explains a lot.
- In Flaky Pastry, the Halloween costumes for Neighbour and Marelle are Dr. McNinja and Antimony Carver.
- The Non-Adventures of Wonderella has a panel that has a very familiar look to it.
- In Fuse King Radical appears in a poster here
- In "'Legend Of The Hunter'', El Vendaval grew his mustache by SHEER FORCE OF WILL.
- In the Ferb TV episode in Phineas and Ferb's third season. Baljeet wants to be referred to as Doctor Ninja Baljeet.
- During the rap segment in The Kids episode of The Amazing World of Gumball, Gumball briefly wears a doctor's attire (complete with surgical mask over mouth) while holding throwing stars
- The first episode of Batman: The Brave and the Bold features a justified invocation of "What Would Batman Do?".
