Hau is a nice, cheerful boy. He gives you presents. When defeated in battle, he is gracious, and tells you that he had fun. Nothing about Hau seems competitive, which might explain why Pokémon players keep theorizing that he’s not your real rival in Sun and Moon at all.
The problem with mining the rich and varied history of the Sonic the Hedgehog franchise for Sonic Generations is that history includes this red and black jerk-off right here. For some, Shadow is a welcome addition to Generations. For others, he still signifies the looming death of a beloved series.