I remember making a post like this on Ayeka.net, and I was discussing this with Adam a few days ago, but the game powerstone really is one of my favorite games. Its a 90's capcom fighting game, on the dreamcast, and just a overall nice game, imo better than the original Super Smash Bros which was out at the time as well....
I mentioned before that because this game came out in 1999, the same time Tenchi was airing on Toonami, two characters in particular were compared to Tenchi Muyo characters, Wang-Tang and Ayame.
Wang-Tang and Ayame
(http://fc04.deviantart.net/fs36/f/2008/249/f/6/Wang_Tang_and_Ayame__Colored_by_chloebs.jpg)
(http://images.wikia.com/capcomdatabase/images/4/46/WangTang.png)
(http://images1.wikia.nocookie.net/capcomdatabase/images//2/26/PSAyame.png)
Looks kinda familiar to two certain people doesn't it?
(http://www.oocities.org/tenchi_the_great21/Tenchi_and_Ayeka3.jpg)
Ayeka isn't exactly a martial artist. But the similarity's to them can be seen there and here.
(http://data.whicdn.com/images/14225574/a_ranma-kun_akane-074_large.jpg)