Many people often ask why I like Nidorina, why I use them to play primary roles in various works, or why the site has such a heavier focus on them. I can't speak for others aside from perhaps inspiration dating back to gifs from Creative Worlds and all the years in between, but I can certainly speak for myself, and it began with Nidoran♀.
There was just something about the female Nidoran that appealed to me back in the day (and this is the pre-mandate years way back in the late 90s before they decided to permanently give it a fixed facial appearance, unfortunately). I’ll tell you this much, I love rodents and lagomorphs. While this includes Rattata and even Raticate, there's something atypical about Nidoran, and I gravitate to things that are different. It’s like the animal that looks familiar, but you can't pin it down as an absolute fact. A chimera, in some sense. It kept me intrigued.
Since Nidorina was the next step after Nidoran, I gave Nidorina a chance out of pity. She seemed awful neglected, even back in 1999 when there weren’t a whole lot of options. I also like a sense of individuality, so the idea of being the only person who could utilize Nidorina back then was more than incentive (it's bittersweet that as of more recent years this is no longer true, but that's a whole other story). With a creative mind to make something interesting out of nothing, I created a character...
I created the character who would become known as Nidorina, a loving creature of the same name.
It was a test to see if I could make Nidorina interesting, and her
introductory story was meant to make people perhaps think twice about
her (and not to judge a person without full understanding, the overall
moral). She became an instant favorite of mine, and a primary character
of the Poke Tales and Legends series, possibly because no other
character I’ve ever created at that time had as much in-depth growth as she
does. My interest in her as a character is what really started my
general interest in the species as a whole. I started to use Nidorina
in games, draw the generic species, smile like a dope when I got to see
her in 3D for the first time in Pokemon Stadium, and other stupid
things that’d make me squeal (like IGN’s really old Pokemon of the Day
article with Nidorina writing in her diary. Seriously, that made my
day). Then many other characters spawned from her, most of them
retaining some sort of piece of her.
So why do I like Nidorina? It’s a trickle down effect caused by one
character, which caused me to gain an affinity for Nidorina in general. Over time, that affinity has waned, with Nidoran♀ coming back in to restore the original balance I had from the beginning on top of my absolute disinterest in the franchise at large these days, but regardless of how I feel about Pokémon™ or the generic Nidorina species, I'll never stop loving the characters I made along the way.