superpowerless

adjective2

1. •
   In fiction, lacking a superpower; lacking the special attributes of a superhero or supervillain.

   • The idea of a practically unarmed, unshielded, and superpowerless human boy defeating what was probably the mightiest warrior of the day without any external aid is absolutely absurd. — 2008
2. •
   Extremely powerless.

   • Though nihilism may not be invincible, superpowers are superpowerless against it. — 2003