She looks like a slender green, slimy, floating girl with very long hair that reaches the floor and short snail-like antennae.
- Attack: Very Low
- Life: Average
- Speed: Very Fast
Sirenia is mostly a peaceful and philosophical type, prefering to contemplate the meaning behind the intricate atomical design of greater beings. But she will fight when she has to, and when she does, watch out!
- The gold version might be a reference to Sadako Yamamura/Samara Morgan, the main antagonist of the Ring movies, Japanese and American, respectively.
- The Gold version also resembles Indonesian ghost Kuntilanak and Sundel Bolong.
- Her second attack's name "Day of the Tentacle" is a refrence to the LucasArt's game with the same name.