Action Kamen
Shin-chan's idol. Action Kamen is a superhero on a live-action TV show that Shin-chan watches religiously. In the manga, Action Kamen even gave Shin-chan an autograph but he didn't put it on a piece of paper... Action Kamen's evil nemesis is Meke Meke who embodies all that is evil which just happens to including smoking cigarettes. A cigarette seems to be a permanent fixture on Meke Meke. He even has one firmly clenched between his teeth during the fast and frenzied fights with Action Kamen. Anyway, the techniques that Action Kamen uses against evil-doers include "Action Beam!" and "Action Beam Ball!" Unfortunately, Shin-chan's attempts to duplicate these techniques on his mother haven't been quite as successful.

Kantamu (Kuntam) Robo
Machine Robo. Gundam. Raideen. Mazinger Z. Giant Robo. Chances are if you can think of a " giant robot" anime show, Kuntam probably parodies it. Kuntam Robo is a " giant robot" show that Shin-chan watches almost as religiously as Action Kamen. The title "Kuntam Robo" is the most obvious parody since Kuntam is spelled almost exactly the same as Gundam. Trying to explain the multitude of in-jokes after that would be a loosing cause. The only guidance that can be offered here would be to watch a bunch of giant robot shows and then watch Kuntam Robo. It's almost guaranteed that anytime that you re-watch a Kuntam Robo segment, you'll find a new joke that you didn't notice before!

Fumie (Mimiko?)
She looks identical to Action Kamen's sweet and caring child sidekick, Mimiko, but the character on TV but her true self are two entirely different things. There are some kids who are so full of themselves that they act like 50 year old people trapped in a childrens' bodies. Fumie is one of these kids.
She babysits Shin-chan frequently but that isn't to say that she enjoys it. As soon as Shin-chan's mother leaves, she'll camp out in front of the TV and watch soaps. Shin-chan, being the "eagar boy" that he is, wants to play with her but she'll have none of it. The only time that Fumie will voluntarily interact with Shin-chan is when she thinks she'll get some satisfaction out of proving how much superior she is to Shin-chan. Considering how pitiful her school grades are, using a normal child in her ego trips could potentially backfire on her. Going one step beyond (cue the Madness song) and trying to do the same thing with Shin-chan could be classified as nothing less than shear suicidal stupidity.

Shinobu
A girl of about college age. Like the regular return of monsoon season every year in some parts of the world, Shin-chan has made regular appearances in her life with some undesirable side effects.. So far Shin-chan has managed to get her fired from every part time job that she has ever held. After sending her life crashing down around her several time, Shin-chan's name is firmly implanted in her mind but everytime that their paths cross, Shin-chan says the same thing, "Who are you?"

Jigoku no Saleslady (Saleslady from Hell)
As the song goes, I can't understand why she walks like a woman but talks like a man.. This woman is a door-to-door saleswoman for a company that makes books and audio cassette tapes for young children. Unfortunately for this "woman", her appearance tends to scare the hell out of young children which means that her sales are pitiful. Shin-chan is also firmly convinced that this woman is actually a man. However, this hasn't deterred her and she has gone to the mountains for rigorous training in the secret arts of the travelling saleswomen. Still, her habit of blowing a kiss sends a chill down Shin-chan's spine.. even when she's halfway across town.

Keiko Honda (Okei-oneesan)
Being Misae's closest friend gives her the "enviable" role of being Shin-chan's "aunt". In fact, Okei and Misae are so close that at times it might seem as if they were related. Being so close also has its disadvantages.. she is often recruited to babysit Shin-chan. Because of her age, she likes to have Shin-chan call her oneesan (big sister) but Shin-chan calls her obasan instead. Obasan is translated as aunt but the word also has other connotations.. namely, old lady. While she finds being called obasan somewhat annoying, up to this point, she's been unusually forgiving of just about everything that Shin-chan has done. The fact that she's hasn't responded with any sort of physical retribution make it hard to understand just how she could be such close friends with a person so different in temperment like Misae (aka The Physical Embodiment of Vengence).
Okei's also is a newlywed and loves her husband. Although her husband is apparently very sucessful and is also what her older sister Misae refers to as a "hunk", he is not without his "idiosyncrasies". Her tolerent nature seems to allow her overlook them but her ability to do this can't be easily dismissed because her husband's secret, to put it bluntly, is that he's an giant anime otaku. Her husband even has a buddy-buddy picture of himself with Action Kamen.

Nene-chan no Kaasan
Nene-chan's mother. Although Nene-chan might be immune to Shin-chan's shenanigans, her mother is a entirely different story. The few encounters that she has had with Shin-chan has left a rather deep impression on her -- somewhat like the impression that a sledgehammer would make. To give her some credit, she makes a superhuman effort to retain her composure whenever Shin-chan is around. This goes as far as to politely excuse herself, go to another room, and beat the stuffing out of a teady bear. Unfortunately, venting her rage in this manner is almost completely useless when Shin-chan is concerned. She has lost complete control on more than one occassion and if the more recent times that she has lost control are any indication, she'll probably make some psychiatrist a very rich person.. From what little has been seen of her husband, he doesn't appear to be in much better shape (plus he is terrified of bugs).

"Ji-chan" Nohara
Shin-chan's grandfather. His personality is very much like Shin-chan's and he regularly wears a sweater with a very large H on it. Perhaps this is proof that Shin-chan's condition is hereditary?