The Ouja-like rider was probably Mitsuzane as Zangetsu Shin or Bravo during the earlier portions of Gaim, but you have to stretch it somewhat. And yeah, I'm not seeing Zangetsu as Odin. Sagara would be Odin more than anyone else.

If anyone was the Ouja of Gaim, I'd say it was Sigurd. He wasn't around as long, no, but when he was he was constantly violently assaulting all of the good guys after making his debut by killing Hase.

Bravo Vs Kabuto! The Ultimate Bake-Off...
Although that could work as a Great British Bake off Type thing. With Jonouchi as the hapless assistant...

Back to business, about extra movies for Gaim and to have their own evil riders against he good ones.

And about the whole Ouja thing.

Gaim vs Zangetsu/Z. Shin
Ryugen vs Salak Indian rider

Yeah, but after Kouta got his first upgrade, he pretty much became the biggest jobber in the series lol

I see no relations or similarities between Zangetsu and Odin.

Plus what Zeo said.

How about a movie about Iyo. the only person who was able to take on an armored rider without a driver and win?

...? I'm not remembering this guy.

So just like Ouja then :lol

Iyo was the waitress that worked at the Drupers.

I'd watch that.