Rindheart had already acknowledged that the rat may come from a different angle so he was moving as soon as he heard the warning rather than making visual confirmation first. He immediately turned towards the voice while moving towards it. He barely saw the mouse as it hurtled towards him. However it was enough to allows his head-butt to solidly collide with the rat. Not only that but he'd used his metal control on his helmet to slam into the rat with even more force. The rat was certainly fast, but Rindheart was hoping it couldn't beat him in a strength contest.