Mermaid Knight, or Meryl as a companion, is a monster in the second part of Monster Girl Quest: Paradox.
Monsterpedia Entry
“A mermaid warrior who has trained herself in the sword arts. She has an unyielding personality and is always polishing her skills as she seeks strong opponents to challenge. She seems to be the rival of the Harpy Knight, and they frequently engage in friendly sparring matches to test their skills.
While she is a warrior in mind, she will also give sexual pleasure to the men who challenge her. If she defeats a man, she will thoroughly play with his genitals before raping him. Her renowned vagina will fill the man with exquisite pleasure, forcing him to dedicate lots of semen to her. Men who are humiliated in this way are then left abandoned on the beach in a state of weakness.”
Attacks
Strategy
Evaluation
Translation Pending…