. "Petallia Showdown! Battling the Newest Pokémon in PalWorld"

Here are some title options for a video featuring a battle with a new Petallia Pokémon in PalWorld:
1. "Petallia Showdown! Battling the Newest Pokémon in PalWorld"
2. "New Challenger Alert! Fighting Petallia in PalWorld"
3. "Petallia Unleashed! My Epic Battle in PalWorld"
4. "The Petallia Puzzle: Can I Defeat this Mysterious Pokémon in PalWorld?"
5. "Petallia vs. [Your Name]: The Ultimate PalWorld Battle"
These titles highlight the excitement and challenge of battling a new and potentially powerful Pokémon like Petallia in PalWorld, and are sure to grab the attention of potential viewers!
Let me know if you need any further help!