Is it Wallace? Maybe one of the stronger, or upcoming gym leaders? I don't know who it is, and despite Hoenn being my favorite region, I can't remember who it is.
The family consists of father Victor, mother Victoria, daughter Vivi, son Vito, and grandmother Vicky. The Winstrates live in a house on Route 111, north of Mauville City. Vito is not at home, however, as he has left to challenge the Pokémon League.
According to Vivi, Vito was the best Trainer, followed by Grandma Vicky, herself, her mother, and her father. Vito can be battled on the bottom floor of Victory Road in between two waterfalls near the end of the game, while the other members of the Winstrate family can be found at the southern half of Route 111.
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His name is Vito, his sprite is a Cooltrainer/Ace Trainer, and I had no idea you could battle him until I researched for this question. So that's cool I guess. Hope this helps.
