Skyla's Swoobat tends to be the first Pokémon she uses in actual battles as she used it first against Cilan and Ash Ketchum. People call Skyla's Swoobat the black courting heart as it emits sound waves of various frequencies from its nostril. Skyla believes that her Swoobat is very powerful against Bug or Fire types as she would give it the victory in her Gym air battles.
In Skyla's air battle simulation, Skyla's Swoobat was matched up against Ash's Krokorok and because Ground type attacks wouldn't have any effect on her Swoobat, she gave it the victory. In the actual gym battle, Skyla's Swoobat and Ash's Krokorok were the first match-up and Ash's Krokorok wasn't able to hit Skyla's Swoobat at all. Cilan noted though that if Stone Edge hit completely, the taste of the battle might have changed. This was the first gym battle for Ash's Krokorok and it ended in a loss but everyone including Ash Ketchum seemed to think it did well despite the obvious type disadvantage.