I changed up my version of Hau from my sun and moon Au

Meet Hauryu the King of Ultra Space
He has the powers of Nihilego, Tapu Koko/Fini/Bulu/Lele and Necrozma
He's 15ft tall from foot to head
His armour plating is taken from Necrozma and is very durable, it can tank legendary moves and not get scratched
He can absorb light and boost his powers gained from the Tapu
His claws on his hands feet and floating arms can rip through the toughest of metals with ease
When using the powers of the Tapu the crystals embedded in his four floating arms (that grow out his back when transforming) change colour depending on the Tapu:
Koko: Yellow
Lele: Pink
Bulu: Red
Fini: Purple

His Nihilego tentacle tails help with balance and can act as a blunt force weapon
He can also rip holes in space time and manifest Ultra Wormholes

As a contrast to his previous cinnamon roll personality, Hau has become very sarcastic and dry with his sense of humour and optimism darkening. He's now very possessive of what he likes (mainly my OC Shard) and will kill to keep it, yet he still has a soft spot for Pokemon. He also has a short temper and can regress to a feral state where animalistic instincts rule over his human reasoning and cause him to act unpredictability.

Can be reasoned with if you play your cards right, often pointing him in the direction of anything he likes will earn a reason for him not to battle you. If that fails try reminding him of who he once was and he'll be so overcome with emotion he'll transform back. Once he's transformed back make sure to take him back to Hala (his grandfather) so he can be comforted because he'll feel guilty about transforming into his King form