Gargantuan Guest 666
101B diamondsExclusive#75 most valuable169 exist
Gargantuan Guest 666 is currently valued at 101B diamonds in Pet Simulator 99, making it the #75 most valuable tracked item. It is an Exclusive item. Values reflect trader consensus as of 1 November 2026. Before you accept any offer for Gargantuan Guest 666, run both sides through the WFL calculator. A fair trade lands within about 10% of even.
Gargantuan Guest 666 value by variant
Recent average price for each version, with how many copies exist. Rarer variants trade well above the normal pet:
| Variant | Value | Exist |
|---|---|---|
| Normal | 101B diamonds | 169 |
| Golden | 0 diamonds | 9 |
| Rainbow | Too few sales | 2 |
Fair trades for Gargantuan Guest 666
Items worth about the same, one-for-one swaps with these are close to fair:
| Item | Value | Rarity | Demand |
|---|---|---|---|
 Gargantuan Elf Golem | 116B diamonds | Exclusive | – |
 Gargantuan Floppa | 115B diamonds | Exclusive | – |
 Gargantuan Samurai Kitsune | 113B diamonds | Exclusive | – |
 Gargantuan Krampus | 111B diamonds | Exclusive | – |
 Gargantuan Leprechaun Fox | 111B diamonds | Exclusive | – |
 Gargantuan Wise Cat | 111B diamonds | Exclusive | – |