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uniqueRatPet

Thunder Rat

Celeste · Patch 2026.10.13

10Gold
DamageDamage
1–25
CooldownCooldown
2.5s
AccuracyAccuracy
75%

Start of Dawn:

  • Discharge requires 1 less Static per different Star Pet

On hit:

  • Gain 3 Static
  • Inflict Disable on 1 item for 1 second
  • This and Star MeleeRangedPet gains +2 max Damage

Discharge (11Static):

  • Trigger an extra attack

On shop entered:

  • Attract a Brown Rat
2×1 · 5 star slots

Level bonus Lv 5–15 · unlocks at Lv 5, 10, 15

On hit:

  • 30% → 90% chance this and Star MeleeRangedPet gains +2 max Damage
Levels also add: +4 Damage · +15% Crit Chance · +15% Crit Damage · +10% Accuracy
All 15 levels
  1. Lv 1Base item
  2. Lv 2Gain +1 Damage
  3. Lv 3Gain +5% Crit Chance
  4. Lv 4Gain +5% Crit Damage
  5. Lv 5On hit: 30% chance this and Star MeleeRangedPet gains +2 max Damage
  6. Lv 6Gain +5% Accuracy
  7. Lv 7Gain +1 Damage
  8. Lv 8Gain +5% Crit Chance
  9. Lv 9Gain +5% Crit Damage
  10. Lv 10On hit: 60% chance this and Star MeleeRangedPet gains +2 max Damage
  11. Lv 11Gain +5% Accuracy
  12. Lv 12Gain +2 Damage
  13. Lv 13Gain +5% Crit Chance
  14. Lv 14Gain +5% Crit Damage
  15. Lv 15On hit: 90% chance this and Star MeleeRangedPet gains +2 max Damage

Balance history

  1. v6.2.1In patch notes
    • Thunder Rat: fixed star highlight condition
  2. v6.2.0
    • Star: New Pattern

    Start of Dawn:

    • Discharge requires 2 → 1 less Static per different Star Pet

    On hit:

    • Gain 0 → 3 Static
    • This and Star Pet → Star MeleeRangedPet gains +2 max Damage

    Discharge (16 → 11 Static)

    Level Bonus
    On hit:

    • % chance this and Star Pet → Star MeleeRangedPet gains +1 → +2 max Damage
  3. v5.0
    • Accuracy: 90 % → 75 %
  4. v2.2.0In patch notes
    • Fix for Thunder Rat getting stuck in a state of never activating
  5. v2.0

    On hit:

    • Stun 1 enemy item for 1 second

    Discharge (15 Static):

    • This gains +3 max Damage
    • Trigger an extra attack

    Discharge requires 2 less Static per Star Type Rat
    On shop entered:

    • Attract a Brown Rat

    Level Bonus
    On hit:

    • % chance this and Star Type Rat gain +1 max Damage
Older changes (9)
  1. v2.0In patch notes
    • Items that have the Discharge mechanic: Elementium Ore, Fulmination Hammer, Thunder Rat, Thunderstrike Ring
  2. v1.0.3

    Overload (48 Static): (was: 35)

    • This gains 50% faster attacks (was: one free attack per Star Type Rat)
  3. v0.38.1In patch notes
    • Thunder Rat, I choose you!
  4. v0.36

    Overload (25 Static → 35 Static):

    • (Remove) Stun 1 enemy item per Star Rat for 1.5 seconds
    • (Add) Trigger 1 free attack per Star Rat
  5. v0.34In patch notes
    • Thunder Rat tooltip updated with the correct overload stun duration
  6. v0.28.0
    • On hit:
    • This and Star Rats gain +2 → +1 max Damage
    • Stun a random enemy item for 0.02 → 0.03 seconds per Static
    • Overload (25Static):
    • No longer stuns ALL stunnable enemy items (but good job Thunder Rat, we’re proud of you)
  7. v0.27.1
    • On hit:
    • This and Star Rats gain +3 → 2 max Damage
    • Stun a random enemy item for 0.1 → 0.02 second per Static
    • Overload (25Static):
    • Stun 1 random enemy item per Star Rat for 2.5 → 1.5 seconds
    • Level Bonus
    • On hit: 20% chance to: This and Star Rats gain +10 → +5 max Damage
  8. v0.27
    • Damage: 1-14→1-25
    • On Hit:
    • Star Rats→This and Star Rats gain +1→3 max Damage
    • Added: Gain 1 Static per Star Rat (Rat Kings actually count for three now)
    • Added: Stun a random enemy Item for 0.1 second per Static
    • Removed: Every 2.5 seconds:
    • Removed: Gain 1 Static per Star Rat (moved to On Hit)
    • Removed: Star Rats are stunned for 1 second
    • Overload (34→25 Static):
    • Removed: Star Rats gain +12 max Damage and +50% Crit Chance
    • Added: Stun 1 random enemy item per Star Rat for 2.5 seconds
    • Added: On shop enter: Attract a Rat
    • Level Bonus: On hit:
    • 20% chance this and Star Rats gain +10% Crit Damage→+10 max Damage
  9. v0.26.0

    Added with Celeste’s release.

Builds using this item

No public builds use Thunder Rat yet. Open the builder to make one.