Invisible Horror

One of the most unique enemies in the entire Catacomb series, the Invisible Horror is a deadly foe completely unlike any previous foe you've faced in the Catacomb series.

It appears only in Catacomb Apocalypse.

Under normal circumstances, the beast cannot be seen until it attacks or is killed. When it does reveal itself, it's a massive red beast with the head of a boar and huge claws and tusks.

In Catacomb Apocalypse
Arguably the single most-dangerous monster in the series to date, the Invisible Horror is a foe that cannot be seen with the naked eye, appearing to the player only if it attacks, is hurt, or is killed.