These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Ironically, even the non-original characters aren't safe from it. RM, for example, though was modeled after the real RM, is essentially an Alternate Character Interpretation of himself, with many behaviors interpreted as extremely camp, his close friendship with RM's Friend and RM's Friend's Twin interpreted as a stalker's crush, his high intelligence interpreted as pure genius, his skill as a Pokemon Trainer interpreted as being unbeatable, and his possession anxiety over his hat taken to the logical extreme.
Possibly also RM's Friend, at least according to Ash. And some might say RM's Other Friend, too. And although RM fits some guidelines of a moe, only some.
Narm: Whenever something bad happens to Barney, he's still smiling. Even if he's on fire, or zombified, or terrified.
Same goes for Barbie, which makes for quite an amusing fist fight between the two of them in one episode.
Nightmare Fuel: In one episode, Barney is set on fire AND HE'S STILL SMILING.
Also, when Brock is cleaning the gutters using acid in one episode, Fan Boy And Chum Chum are in the gutters. The acid dissolves them NOT EVEN LEAVING BONES.
In the first episode/Christmas special, RM's Friend says that he only stopped reading his manga and came inside when he realized that the snow had completely covered him and obscured his view of his manga. I shudder to think of how long it would take for him to realize that June broke both of his arms and both of his legs.
RM does the Moar Krabs face in the first Halloween special.