Stalwart doesn't even grimace at the hit to his hips, and increases his weight to a full two hundred tons, careful not to go overboard with the weight increase as his full weight might make him break the floor. He slams his fists into Ace's upper back, and he then grabs the android's shoulders. He them jumps, twisting in the air so that Ace would hit the ground back first. He puts his arms in front of his face to guard it against the impact. He then makes himself twice as heavy, aiming to take Ace a few floors down with him. "Going down!"