Pretty sure this was willr0ck who created this one. Here's a backdrop for it.
As far as a stable goes, I've got an idea for you. Let's go with the sword theme. Apparently, Japan has what's called the Tenka-Goken, or Five (Greatest) Swords Under Heaven, according to wikipedia. So that's your theme. The five best wrestlers in the company, each representing one of the swords; essentially, a Japanese Elite stable. (I've got a logo for this, but I haven't had time to clean it up or create a backdrop and I've got a meeting in 7 minutes, so I'm rushing).
First: Dojigiri / Slayer
"The yokozuna of all Japanese swords" (yokozuna meaning like grandmaster, not the wrestler). This is your ace. Your Okada. He's the best and the leader of the stable. An old sword, he's probably a veteran well.
Second: Onimaru / Demon
This dude is your muscle or protector of the group. Probably a brawler or striker. The legend with this sword is that it moved by itself and killed an oni demon to protect someone from a curse.
Third: Mikazuki / Crescent Moon
This is your crowd favorite and underdog. Perhaps a masked wrestler as well with some charm. This sword was a favorite of a shogun and what he used when he fought his last battle, hence the underdog bit.
Fourth: Odenta / Great Denta
This is your technical wizard. The sword is supposed to be the best forged by Japan's master smith.
Fifth: Juzumaru / Rosary
This sword has a juzu or loop of prayer beads adorning it, so your wrestler here can be more of a mystic type.
I've also considered using these as titles/trophies at certain events, but I don't play Japan much. I'll throw a stable logo in here for it later once I have time. I just wanted to write out the idea.