[Sol Fury]

Raijin-oh was much more of a cameo in Brave Wars for the PS2. He got into the game when many of the other Braves (Exkaiser, Fighbird) did not. The Votoms cameo in the original game was just for one or two missions. Very brief and disconnected with the story. Raijin-oh's appearance on the other hand has him join the party as a full member (though you don't get to use God Raijin-oh at all, sadly)

The series is more or less accepted as a cousin to Brave, especially now Takara and Tomy have merged.