Armored Core 6's late game Ice Worm boss is a big guy, mc888 absolutely dwarfing the player in a way not dissimilar to old FromSoft bosses like Sekrio's Great Serpent or Dark Souls' sad sack lava guy punching bag, Ceaseless Discharge. As prolific FromSoft dataminer Zullie the Witch demonstrates though, the Ice Worm puts all those other bosses to shame in terms of sheer size.
Laid in a straight line, the Ice Worm would stretch all the way from the First Step site of grace to Castle Morne on the Weeping Peninsula (fun fact: actually an island) a whole zone away. You could ride Torrent on this thing like a highway, and one of our sweet little baby Tarnished is barely the size of the Ice Worm's spiked teeth it uses to burrow through the ground.
My takeaway? If Augmented Human C4-621, Callsign: Raven had been around during The Shattering, it would have gone down a little different. Most of these stinky demigod guys barely come up to your average AC's shin, and Raven's killed something the size of their most formidable cities.
It would be like pitting jinda44 Goku against a daycare. "My name is Malenia, Blade of Miquella?" Well these are two VP-66L Laser Shotguns, each longer than you are tall. You could sort out notorious perv Mohg, The Lord of Blood with a single volley of the Songbirds shoulder mortar to the face, and unfathomably old eldritch horror, The Elden Beast, simply wouldn't know what to do when confronted with a PB-033M Pile Bunker.