I have a knight, barbarian, zulu, viking, piker, arab, caveman and a samurai(and random assortments of below level 20 characters). One might say I'm one of the most tolerant players around.
I know of one in the clan who watches anime. I have watched Cowboy Bebop(which was a serious sci-fi show) and Ghost in the Shell(which also is a serious sci-fi show). The rest of the genre I have troubles with for the same reasons as you. I only watch them because I ran out of actual sci-fi to watch, being a sci-fi geek. I have never discussed anime with anyone in the clan other than the one person where he told me that he watches anime, and that was the end of that discussion.
My interest in Japan is as big as my interest in India, China, America and Europe. I'm an all out history amateur.
Mostly when we flank, the only thing we lack is cav and shields. We usually have bamboo spears, crossbows and throwing weapons(when we're out in force). When we're two guys, we generally have our standard gear, which for me is a sword.
Ninjas aren't my favourite warriors.
It is pure coincidence that I'm in the clan. And the only thing in your description that fits me is the roleplaying(actually being serious about a style) and the rebellion towards stat optimization and playing the numbers game. I intentionally keep me in the dark regarding the finer points of game mechanics that I can not observe with my own eyes. Only reason I joined a the ninjas was because it was the only clan that seemed likeminded to this style of playing. It's the same reason I have turned off the UI apart from chat.
Thomek: I think Ninja_Totoro had an avatar in the forums of Totoro, but that was irony.