- Protoform Abilities
- Can emit soundwaves that hypnotize slugs in the area.
- Strange trilling call puts slugs to sleep.
- Hypnowave (Unofficial name) - Emits stronger soundwaves that hypnotize even more slugs.
- Whistleer (Unofficial name) - Flies rings around opponent, create a sustained, ear-splitting scream. Note: Molenoids are left unaffected.
- Blammerang (Unofficial name) - High-speed sonic boom blast - circles back for another shot.
- Much like the Infurnus, Crystalyd and Narwhaddle slugs, Pieper slugs can be seen as a more rare & powerful version of a more common species; the Slyren slug.