The only reason I even brought this up is for series that I'm not watching and am not likely to be. I'm obviously not going to go around checking every character whose design I like on wikipedia to see if there another character that they're equivalent to.
I only bring this up because I was interested in knowing the information when it came up once in a forum thread. The characters had similar designs and so both contained images that I was interested in looking at. Obviously I can't name the exact example, because that would be spoilers.
Again, I did not in the least expect anyone to agree with me. I don't know how it could be safely implemented, since links break spoilers. I merely brought it up because this kind of information can be visually relevant, in a way, and because it's information that I've used in the past.