I was thinking that Mikey and Dylan have just one kid since I don't see Dylan as woman who wants multiple children and Mikey is okay with that. So this is their son! Happy to help out musicgirl988 and hope you enjoy!

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Name: Wyatt Bennett Hills
Age: 10 (15 in time skip)
Sex: Male
Height: 4'9" (6'0" in time skip)
Sexuality: Straight
Date of Birth: June 7th
Zodiac Sign: Gemini
Eye Color: purple
Hair Color: black with small green streaks

Home Region: Kalos
Likes: books, sweets, and his father's tech.
Dislikes: school, outdoors, and being around other people (this get better over time)
Family: lives with Dad (Mikey), Mom (Dylan)
Occupation: Student
Year: 5th

Backstory: being an only child, Wyatt was used to being alone but he never really minded it all. He felt like he can focus on his own things that made him happy. He doesn't have many friends, he doesn't like people that much (that'll change once he gets older) his mother, Dylan always said he reminded her so much of his father and Mikey would brush it off saying how untrue it was. But, Dylan loved both her boys so much. Wyatt loved his happy little family.

Personality: Wyatt really keeps go himself and is a bit of a loner like his dad. He's nothing much like his mother, Dylan at all, maybe just with ear color and hair but other then that, Wyatt is much like his dad.

Appearance/Clothing: light green freckles dotted his nose and his cheekbones like his father's. He wore so of his mother's old clothes that she kept for him. He really like the graphic t-shirts that Dylan had in her collection and he wears one each day of his life.

Pokémon Team: Arcanine, shinx, Lycanroc (dark form), Poochyena, Snorlax, Glaceon