Demon Scylla, or Miriam as a companion, is a monster in the second part of Monster Girl Quest: Paradox.
Monsterpedia Entry
Attacks
Strategy
Evaluation
"You seem dispirited when you see tentacles but can't entangle yourself with them. Do you want me to gather 1500 kind of tentacles to punish you with the full course? ...Looks like you do. The Demon Scylla mainly uses Tentacle skills. She can also Blind you. Since she's a Scylla, she's weak to Lightning elemental attacks. Blind and Paralysis work on her so she should be easy to take out. Now go, oh Brave Luka. Please wait if you intend to order tentacles."