From VG247: “The Cattus monster has a new foe in Fortnite, as dataminers have uncovered a giant robot called Doggus.
Inside the Pressure Plant vault, a giant robot is currently under construction. A side-by-side comparison of the Doggus and Cattus feet from dataminer FortTory shows how massive it will be, though it doesnt quite have the foot span of the Cattus.”
Source: N4G PC Fortnite: a giant robot called Doggus is being constructed in Pressure Plant