CarlManvers2019
Writers Blocked Douchebag
Berserker Armor
The Berserker Armor is a suit of highly durable body armor currently worn by Guts. Wearers of the armor are aptly named Berserkers, due to the superhuman strength and inhuman ferocity they are bestowed. At an unknown point in time, the Berserker Armor was forged by the dwarf blacksmith Hanarr...
berserk.fandom.com
One thing that as far as they can tell is that they're like Wargs, except they could "Warg" themselves and release the beast within
They don't discover the strange ability of this armour until real combat