Ermac is a Mortal Kombat character, not a Ronin Warriors character, so there is no official “who can Ermac fight in Ronin Warriors” matchup list. In Mortal Kombat lore, Ermac is a telekinetic ninja who has fought characters like Kenshi and Liu Kang, and he was created from many warrior souls.

If you meant a fan crossover, the most natural Ronin Warriors opponents for Ermac would be the armored warriors, especially:

  • Ryo.
  • Rowen.
  • Sage.
  • Kento.
  • Cye.

That’s because Ermac fights like a ranged, psychic-heavy assassin, so he would likely matchup best against melee-focused fighters rather than pure mystics.

Possible crossover matchup Why it works
Ryo Frontline swordsman versus telekinetic pressure.
Rowen Speed and agility versus Ermac’s control of space.
Sage Balanced fighter versus a powers- heavy opponent.
Kento Brute force versus precision and telekinesis.
Cye Close-range skill versus long-range disruption.
If you meant a specific Ronin Warriors episode, game, or fanfic, that would change the answer.