From hidden speakers, an feminine announcer calls. "Take your position!" she has an idealised voice so to speak, pretty much matching the voice of any AI with a female identity in any generic fantasy/sci-fi film, only with extra enthusiasm. "Begin!"
Aloysius squints at his opponent, it's hard to see him in the darkness, only really contrasting against the stadium's boundaries... At least he isn't wearing dark blue, that would blend into the night light even better!
Once the voice hits his ears, his body moves on its own and immediately throws out his lead. "Go, Leah!"
Holding up his pokeball, it bursts open, with light erupting from its exposed bottom half interior, straight up into the air. The light extends, accumulates in the air and eventually materialises into a swoobat... So that's the name of his Swoobat!.. Leah!
A bat like her has amazing night vision, couldn't ask for more while having relatively dark colours to blend into the night, making it hard to read her personality since it's difficult to see her in general, but if it could be seen, it's apparent that she is very bubbly with a soft, intently stare, like a goofy farm girl crossed with a straight-A high school girl. She is eager to help, but can put this part of her aside for the battle!
It's hammered into her psych, her fighting style. She naturally flies straight up and gets ready to create a lot of distance between her and her upcoming opponent, all while keeping her eyes on Dion.
Aloysius lets out a fond sigh and folds his arms, standing there. Leah, always a joy and a comfort, a comrade and a friend.