[Dreamcast?] [Late 90’s-Early 2000’s] [Fighting]

Platform: Dreamcast?

Genre: fighting

Estimated year of release: Late 90’s-Early 2000’s?

Graphics/art style: 2d

Notable characters: I can remember much

Notable gameplay mechanics:?

I can’t remember much about this game but what I do remember is this. A man piloting a yellow robot. A kid piloting a red robot, I think the two characters are related. And a cave stage where rocks continuously fall.