Ogres are huge and powerful creatures from Qliphoth. They resemble the Trolls, except that they're several stories tall and have a massive, misshapen head. Like their smaller brethren, the Ogres aren't supposed to exist in the physical world. They are also able to heal their wounds very easily as seen when the ogre Guts is facing reattaches the arm that Guts had severed in much the same manner as Zodd had done before.
When one stumbles into Enoch Village in response to the massive Astral disturbance in the area, he uses anything he can to pulverize his enemies. It is eventually defeated by Guts.
Ogres also appear in the Troll Cave, when Slan summons a large number of them to distract the Skull Knight as she confronts Guts.