Black Golem, or Maiss as a companion, is a monster in the second part of Monster Girl Quest: Paradox.
Monsterpedia Entry
Attacks
Strategy
Evaluation
"You were fused with such an abominable golem. I guess being a Hero Battery is your thing. The Black Golem is a magical type of doll. It will heavily rely on various elemental magic attacks. Except for Petrification and Bind, status ailments hardly work on her. Her elemental defense is also high so you should either Petrify her or defeat her normally. Now go, oh Battery Hero Luka. If my alarm clock's battery runs out, I'll cram you inside it."