Chansey

his expression in his gaze is perfect, it represents the pain of a blissey, whose destiny is to fight for his cruel trainer. forever imprisoned and only released when he has to fight. "I choose the Blissey because he is good at take attacks. He takes a lot of hits without collapsing" This will think his trainer when he frees him and he won't care about the still-to-hatch egg trying to protect it.