The REAL beginning of Anthromon Sun and Moon...
It's Professor Kukui from Pokemon, but he is also a Decidueye. Based on the fact that sometimes (I think when you choose Popplio as your starter?) he uses a Decidueye on his team during the final battle before becoming Champion Also inspired by the thumbnail of a certain video for the music of said battle depicting Kukui accompanied by a Decidueye.

Also, from the start I believed the Masked Royal was a completely separate character and was thinking of making him an Incineroar or something, but when I searched it up I realized that he and Prof. Kukui were one and the same. So here it is below.

and I thought Decidueyes use ranged attacks... XD