kamen rider kuuga and n-daguva-zeba (kamen rider and 1 more) drawn by shouji_nigou

Both Daguva and Kuuga in their Ult form sees all the Grongi in their humanoid forms and bypasses all defences they have. Every punch cause bleeding on their target.
So while the two might be transformed, from their point of view both are just two guys punching each other the fuck out.