AncientGarurumon is a hero in the Digimon Frontier movie, Island of the Lost Digimon.
A long time ago, he died along with the Ten Legendary Warriors to restore peace from the evil Lucemon.
In the movie, he was revived along with AncientGreymon after Kotemon's sacrifice to defeat Onismon.
AncientGarurumon is a Mega-Level Digimon that resembles the parts of Lobomon and KendoGarurumon.
Possessing the attribute of "light", it is one of the Ten Legendary Warriors who saved the Ancient Digital World. A Mega Digimon who existed only in the distant past, it is called the "Supreme Shining Beast". AncientGarurumon's abilities were later passed on to the "Beast Digimon". It is said that in the previous crusade, it survived to the end alongside AncientGreymon, and sealed away Lucemon. Its Special Moves are brandishing its two greatswords with a dazzling radiance and cutting apart the opponent (Sharpness Claymore), and completely halting the movement of electrons with super-cold air at absolute zero and a super-ray of light.
- Sharpness Claymore: Brandishes its two greatswords with a dazzling radiance and cuts the opponent to pieces.
- Absolute Zero: Completely halts the movement of electrons with super-cold air at absolute zero and a super-ray or light.
- His spirit forms are: the Human Spirit of Light (Lobomon) and the Beast Spirit of Light (KendoGarurumon).