Siren
- Route
- Story / side content
- Behavior
- Water and wind attacks; Lunatic Voice may inflict Sleep or Silence
FIELD GUIDE · VERIFIED AUGUST 13, 2026
Final Fantasy Resonance Espers & Summons
Known Espers, how they are obtained, their three-turn battle behavior and reveal status.
Three-turn battlefield ally
Espers fight alongside the party and deliver a powerful finishing move before departing. Summoning consumes substantial MP.
ConfirmedDATABASE SECTION
Known Esper atlas
Acquisition wording and battle behavior remain individually labeled by evidence state.
Ramuh
- Route
- Optional dungeon battle (press preview)
- Behavior
- Judgment Bolt deals lightning damage to all enemies
Ifrit
- Route
- Story / side content
- Behavior
- Hellfire deals fire damage to all enemies
Shiva
- Route
- Story / side content
- Behavior
- Diamond Dust deals ice damage to all enemies
Titan
- Route
- Story / side content
- Behavior
- Gaia's Wrath deals heavy earth damage to all enemies
Bahamut
- Route
- Story-related presence
- Behavior
- Travels with the unnamed mysterious woman; battle mechanics not announced
Evidence, not guesswork
Every field is labeled Confirmed, Observed, Reported or Unknown. “Unknown” means Square Enix has not announced it — we do not fill gaps with speculation.