Slyrens are little slugs but they can fly rings around opponents while doing an ear splitting scream!
The ghouled version of Slyren is Sirench, but has yet to appear.
- Protoform Abilities - Perimeter alarm, can mimic sounds.
- Whistleer - Flies rings around opponent, create a sustained, ear-splitting scream.
- Sleepytime - Strange trilling call puts opponent to sleep.
- Blammerang - High-speed sonic boom blast.
- HyperSonic - Creates a high pitched frequency that causes temporary deafness in an opponent.
all of a slyren's attacks are sound-based, and therefore they can hit lots of targets at once. although a slyren can win you duels just by landing its sleepytime attack (which is also useful against ghoul slugs), the former is pretty hard to land; its whistleer attack can be used to greatly handicap an opponent, blammerang is perfect to blow up stuff and hit slugs while avoiding to get hit and hypersonic makes teamwork incredibly difficult for the opponent and a little easier for you. their major weakness is that its voice does not affect slugs
- Hyperflash - "Narwhaddle" + "Slyren"- TBD. It hasn't officially appeared on the show yet.
- The New Kid Part 2 (First appearance)
- The Gentleman and the Thief
- King of Sling
- Keys to the Kingdom
- The Thrill of the Game
- It Comes by Night
- Dark as Night
- Slugterra: Eastern Caverns
- The Return of the Eastern Champion
- The Slyren is a play on "Siren". The Sirens are female sea monsters that originate from Greek mythology. The Sirens would sing and lure sailors to dangerous waters, which would lead to their deaths. Sirens are also a type of swamp dwelling legless amphibian.
- A Slyren can be seen among Twist's arsenal after revealing his alliance with Dr. Blakk.
- Only other Slugs are immune to their singing.
- A Slyren is the only Slug that can break a Geoshard's crystals.
- A Slyren's voice can affect Ghoul Slugs
- One was seen being ghouled in "Dark as Night", however neither its protoform or velocimorph have been shown.
- It is shown that only their singing can return Ice Ogres back to hibernation.
- Trixie used one in the Slugisode "Pack Your Slugs!".