Now this is definitely an ogre. Though, it is interesting to see such an extremely different depiction between this and the mage. I know the mage would be more intelligent, but it's appearance (at least anatomy) wouldn't change that much.
It's so since first edition. This is the picture of Ogre Mage in AD&D 2e Monster compendium: [link] If you check Pathfinder version, it's dressed as a samurai: [link] Even 3rd edition is a blue ogre with small horns (like the oni we see here), and the same powers than this kind of oni has. The only difference is that the sword is european.