Gladiator

The gladiator is an armored Hell knight- or baron-like enemy appearing in Doom Eternal which is momentarily shown in the second trailer released on. It carries a large shield and appears to attack with a or  weapon. It resembles the Hell nobles of the original games more strongly than their Doom (2016) or Doom Eternal counterparts. Nothing else is currently known about this enemy, aside that it will likely be a one-time boss.