Seriously, what do you think you achieve with a comment like that? Is the artist supposed to feel better that his/her oc looks like the fandom you're at the moment fapping to? Most of the artists I know want to be recognized for their own characters and ideas, and most of the time they haven't even thought - or better yet, heard - at all of that thing when the picture was created.
"This reminds me of--" is not a compliment. It's not a critique. It gives nothing new, but it makes you look like a snob who can't accept that when there is billions and trillions of people maybe might think of same kind of idea what someone else thought. If, as a comment, it's something, it's actually an insult of someone's imagination. Or, maybe, the person was actually inspirated about something. Let's say, he was inspirated by some pokemon. He liked the design and wanted to create something own with it. And you know what? THAT IS NOT A CRIME. Being inspirated about something is not a crime. Maybe he liked how Pikachu's ear tips are black, and took that. And how Mareep has a lamp on top of it's tail and took that. Maybe he liked the charmander's design and took a bits of it. Maybe he grew with pokemon and it affected his style. Still, even if it'd be a blatant copy of something, you have absolutely no reason to go and be smartypants. If it's a pokemon, IT IS A POKEMON. If it's not a pokemon, IT'S NOT A POKEMON. If it reminds you of something, the least person to care is the artist.
Grow up today and be a little less of a dick in the internet, thank you. Or, you know, I'm going to castruate you with my own hands to prevent the idiotism from spreading.
On next episode: Reading artist's comments