Large Axe Bots were cousins of the Axe Bots, albeit red and larger. They could be found at Eudora's Logging Site.
When one spotted Ratchet, they would stand still and taunt him until he came within range of their giant axe, this meant that they could be easily dispatched at a distance with any ranged weapons.
A Large Axe Bot also appears in the Insomniac Museum
in Ratchet & Clank (PS4)
, as the planet Eudora, and thus all enemies unique to it, were cut from the game.