From Halopedia, the Halo wiki
When used by Spartans, many claim it drives them to build and create.
Halo 5: Guardians
- Helmet: Whether it is a glitch in the War Games simulator or the creation of a mad programmer, those who wear the enigmatic TIMMY helmet claim to hear a siren song that drives them to build and create.
- The armor is named and designed after Timmy, the Whale in Forge.
- The helmet's description is a reference to how there was a constant whale noise singing throughout the map Tidal before the update Anvil's Legacy gave the option to turn it off.
A Spartan-IV using TIMMY-class Mjolnir in Halo 5: Guardians.
List of appearances
- Halo 5: Guardians (First appearance)